Feel Better, Live More with Dr Rangan Chatterjee - The New Science of Women’s Health: Strength, Metabolism & Menopause with Stacy Sims #578

Episode Date: September 16, 2025

As we get older, have you ever wondered why the exercise advice we’ve been given doesn’t seem to work as well as it once did? As we move into our 40s and beyond, our physiology changes in ways that can often feel confusing and frustrating. But what if we could harness those changes to feel stronger, healthier and more resilient than ever before? My guest this week is exercise physiologist and nutritional scientist, Dr Stacy Sims. Stacy is dedicated to helping active women – and the people who support them – take back control of their bodies, health and lives through science-based knowledge and practical tools. She is the author of two books, including ‘ROAR: How to Match Your Food and Fitness to Your Unique Female Physiology for Optimum Performance, Great Health, and a Strong, Lean Body for Life’ and the creator of her signature course, Women Are Not Small Men, after recognising the lack of research specifically done on women in exercise, nutrition and medicine. In this conversation, we discuss: Why conventional fitness advice often fails women in midlife, and how we can move beyond outdated recommendations How hormonal changes during perimenopause affect everything from metabolism and muscle strength to mood and sleep The crucial role of resistance training in maintaining bone density, muscle mass and cognitive function as we get older Why high-intensity interval training can boost our metabolism, balance blood sugar and reduce harmful belly fat How the language around “muscle toning” can be unhelpful, and why lifting heavier weights is so important for building real strength and protecting our long-term health Practical ways to start strength training safely, even if you don’t enjoy the gym, and simple strategies for fitting effective movement into a busy week with minimal time How building strength now supports our independence, resilience and vitality, helping us stay active, prevent injuries and feel confident as we age This conversation is an invitation for all of us to rethink what’s possible as we grow older. Stacy’s insights remind us that with the right information and support, we can build strength, confidence and better health at any stage of life. And if you find this episode helpful, why not share it with the women in your life – friends, family or colleagues – so they can feel empowered and informed about their bodies, too. I hope you enjoy listening.   Support the podcast and enjoy Ad-Free episodes. Try FREE for 7 days on Apple Podcasts https://apple.co/feelbetterlivemore. For other podcast platforms go to https://fblm.supercast.com.   Thanks to our sponsors: https://drinkag1.com/livemore https://boncharge.com/livemore   Show notes https://drchatterjee.com/578   DISCLAIMER: The content in the podcast and on this webpage is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your doctor or qualified healthcare provider. Never disregard professional medical advice or delay in seeking it because of something you have heard on the podcast or on my website.

We've been so culturally ingrained to think that we need to eat less and move more. Or in actuality, we need to feed our body and nourish it with really good high quality food and move. And that ends up being more calories than what a typical woman thinks is appropriate. Hey guys, how you doing? I hope you're having a good wheat so far. My name is Dr. Rongan Chatterjee, and this is my podcast, Feel Better, Living. more. As we get older, our physiology changes and sometimes we find that the lifestyle choices that were so effective earlier on in life no longer work as well. But what if there was a way to harness those age-related changes to feel stronger, healthier and more resilient? My guest this week

is the exercise physiologist and nutritional scientist, Dr. Stacey Sims. Stacey is dedicated to helping women and the people who support them take back control of their bodies, health and lives through science-based knowledge and practical tools. Stacey is the author of two books, Raw, How to Match Your Food and Fitness to Your Unique Female Physiology, and Next Level, Your Guide to Kicking Ass, Feast. great and crushing goals through menopause and beyond. She's also the creator of her signature course, Women are Not Small Men,

after recognizing the lack of research specifically done on women in the fields of exercise, nutrition and medicine. In our conversation, we discuss a wide variety of topics, including why conventional fitness advice often fails women in midlife and how we can move beyond what's. Stacey's outdated recommendations, how hormonal changes during perimenopause affects everything from metabolism and muscle strength to mood and sleep. The crucial role of resistance training for bone density, muscle mass and brain function, and why she is not a fan of the term muscle

toning. Why high intensity interval training can boost our metabolism, balance blood sugar and reduce the harmful belly fat. And of course, throughout the conversation, Stacey emphasizes practical strategies to help you exercise in a way that your body desires, even if you don't enjoy the gym or feel you're short on time. Stacey is a passionate and incredibly knowledgeable lady who really has been a pivotal figure around the world in changing the way we look at female health. This conversation is an invitation for all of us to rethink what's possible as we grow older. And Stacey's insights remind us that with the right information and support, we can all build strength, confidence, resilience and vitality at any stage of life.

What would you say are some of the common mistakes you see women, in making as they get older when it comes to losing body fat, increasing vitality, and I guess more broadly, improving their overall health and well-being. I think the biggest thing is following traditional trends where for looking at women who are in this kind of 40 plus or maybe 45 plus age group at the moment, grown up in the whole diet culture of move more, eat less, and that's what people tend to do, especially when they're trying to lose weight. But if we were to switch it and say, you know what, I actually want you to do more high intensity and to eat more to shift your body composition. It becomes a little bit

of a disconnect and people can't get their head around it. But it's following the traditional trends that have been so so well versed in the fitness world that really do not work. Yeah, it's interesting. As I've been researching you and the things that you talk about, it's very clear that, first of all, you know, a big part of what you do is to help people understand that women and men are fundamentally different. They're physiologically different. They're biologically different. You of course have your phrase that women are not small men. But what's super interesting for me is that as women get into their 40s, you are very clear that two things need to happen with respect to movement. There needs to be resistance training and there needs

to be hit high intensity interval training. I want to talk about that, but I guess the way I wanted to frame it, Stacey, was to pose a theoretical question to you. I often talk about what I consider the four pillars of health, food, movement, sleep and relaxation. And so my question to you is going to be, if a woman, let's say, 45 years old, okay, so in that perimenopausal period, is nailing her food, whatever that means, we can maybe discuss that later, she's nailing her sleep. She has low stress levels. And for her movement, she is walking for 60 minutes a day. So her lifestyle is really good, but she's not doing hit training and she's not doing resistance training. Is that enough for her to age well and be well? If we're talking about the walking

component of movement, and that's what she's doing, no, it's not. Because if we're looking at walking, we're falling into the idea that we're doing cardiovascular work, which is good. I mean, we want that. But when we start looking at what does it mean to age well, we need to look at how strong and powerful we are just to be able to carry groceries when we're 80. Think about our bone and bone density. And we also really want to examine what does cardiovascular fitness look like. because when we start getting into perimenopause onwards, because we've lost the epigenetic exposure of estrogen and progester, and in some extent, testosterone that affects every

system of the body, we have to really understand what that means. Because if we think about puberty and the first expression of these hormones in a major way, we see all these changes that happen from a biomechanical and a physiological perspective, in girls and boys. And girls tend to put on more body fat. They end up having less of an aerobic capacity as we compare it to age matched or puberty matched boys. We see so many different things that occur with brain, brain health and mood development. And so when we get to the other side of things and we're seeing the unwinding of ovarian function, every system of the body is affected, including vascular compliance. So if we're thinking about walking for cardiovascular health

and burning some calories, we're not optimizing the vascular compliance that we need to control blood pressure and to help with our lipid profile. So we see a really significant increase in LDL and our total cholesterol in women who are mid to late perimenopause and it has to do with the way estrogen is no longer there working for anti-inflammatory properties, and there's a misstep a way that we're having conversations within the system to really use free fatty acids as a fuel. So when we start looking at all the pillars that I agree with, because I talk about it all the time, we look at physical, the emotional or the relaxation, parasympathetic, the sleep, and the nutrition, right? So if we're nailing all of those and there's a misstep and we're still not seeing body

composition change, we're not seeing change in our lipids, our blood glucose, and a lot of women don't. And this is where they start falling into, well, my body composition isn't changing. So I need to up my walking or I need to eat less or I need to do fast exercise. And there's all these things that start to play in that really create a misstep in what will accumulate into a better longevity profile. Yeah, there's so much there to unpack. A couple of words you use there, which I'm not sure all of my audience will fully understand epigenetic and vascular compliance.

I'd love for you to explain, please, what those two things mean. But also, I think a useful way to look at this would be to maybe start in utero and explain to us, you know, the differences between women and men or boys and girls, males and females, starts from a very, very early age, doesn't it? Yeah, I mean, when we're looking at the first development, really, of the fetus, right? We're looking at how much of an X chromosome is expressed, and this will determine if the fetus is going to be a girl or a boy, typical. XX or X, Y, because right now that's the bulk of the research. So as I'm talking, I apologize

for this, but it's the way that the science goes. It's like, we really only understand XX versus X, Y, maybe X, Y, but when we're talking in utero, we see that the fetus that's X, X, X, is more stress resilient. We see that upon birth, when we're looking at X, Y, versus X, X, X, there's distinctive sex differences within things like muscle morphology, which means the type of muscle fibers that we have, as well as how our body will fuel itself as it starts to get older, things like mood and response to stress in the external environment is significantly different between a baby girl and a baby boy. And we see all of these things that progress through life, but from a sociocultural perspective, it hasn't been identified as these biological or genetic sex differences. It's

been, oh, it's because you're a girl and you're expected to be this way or you're a boy, you're expected to be that way. So if we bring it right down to sex differences at birth and we're looking, okay, if the baby is born X, X, X, we see that this baby has a smaller heart, smaller lungs. We see that the muscle morphology is going to be one that leans towards being more endurance-oriented and able to use free fatty acids a lot easier than a boy baby. And then the boy baby is born with more what we call glycolytic or fast-switch fibers, which means that through life is going to be able to produce more power and force and is going to use more carbohydrate rather than free fatty acids.

So then as we develop through puberty and we see that now all of a sudden we're having an exposure to estrogen and progesterone girls and exposure of testosterone, that's what we start to see with epigenetic changes. So that means that the exposure of these hormones is creating a change within the body that is really unlocking some genetic predisposition.

So for girls who are now having estrogen progesterone that comes into play, we see that this changes their whole biomechanics. So their hips get wider, their shoulder girl widens. They tend to grow longer arms and legs faster than their core strength. So we see a disconnect in the way that the body's able to move. We see there's differences in brain development and progression, which changes mood and the way that someone will respond to an external environment. So that's why we see things like when you're talking to young girls in sport,

they want to be more team-oriented and they don't want to be pulled out and said, okay, well, I want you to drive the kick. They want to be together, whereas a boy, you can really be up front and forward because they're very competitive and aggressive from testosterone exposure. So when we start pulling out all these sex differences, and then we put on the sex hormones, then we see this huge differentiation of the way that a person will respond

to external stresses of exercise and how they will respond to internal feedback from the nutrition that they're getting in the nutrition timing and circadian rhythms. So when we start to really look at all of that and then apply it to modern day, it's like, okay, well, we look at women and women have been following

all of these things that have been put out in the fitness and nutrition world that's been based on male data, and they're not optimizing. We see so many missteps, and we hear about the pathophysiological aspects for women, like iron deficiency and eating disorders or low energy availability, poor muscle control, poor muscle power, and if we just pull it back and say, you know what, from a female physiology perspective, these are the things that we would like to do to improve and reach your potential. From a male physiology perspective, these are the things that we know work for you. We've seen it in the research too.

So we just need to separate and divide. It's not that one is more complicated than the other. It's just we're different. And we respond differently. Yeah. It's so interesting. You mentioned there that the female fetus is more resilient than the male fetus. And that's really interesting because, for example, Dr. Gabel-Matte,

who speaks a lot about trauma. In his last book, he calls women society's stress absorbers. And he says that in relation to the disproportionate amount of women who get autoimmune disease compared to men. So it's quite interesting to me that you're saying, biologically as a fetus, women are more resilient to stress. yet at the same time, it seems that into middle age, for example, women are absorbing a lot of society's stresses

for a number of different reasons, which may well be contributing to their increased rates of autoimmune disease compared to men. It's fascinating, isn't it? Yeah, and this is where we can get into discussion of like the X chromosome dosage. So we're starting to look more and more at the genetic capacity of what does XX versus XY mean?

And if we look at the subset of individuals that are born XXY, they are more predisposed to autoimmune disease, even though they present as male. And it has to do with how stress can create epigenetic change within one of the X chromosomes that then triggers these autoimmune diseases. So when we're looking at what does stress resilience mean,

when we're in utero, it could be effectively they're absorbing more stress, but they're more resilient to factors that would ordinarily cause the death of the fetus. So it has to do with that whole environmental aspect and how the XX chromosome responds to that. Yeah. It's interesting that there's genetics, there's hormones, but there's also our environment in the sense that if we're, we're, we're, there's genetics, there's hormones, but there's also our environment in the sense that if women are constantly being told to do things that is based on research that was done for men, that's a huge stressor, right? That's a huge stressor because something's not working. They keep following the advice. I'm not losing my belly fat. I'm, you know,

whatever it might be, I don't have the composition I want. I'm not aging as well as I want to. and it's interesting that word stress can mean so many different things, can't it? It's not just biological, it's also societal as well. Right. I mean, one of the examples I'd like to bring in when we have these kinds of conversations is Alzheimer's. So we see a greater risk factor for Alzheimer's as being female.

But what we're not really understanding is that the cohort of women that are being studied now with Alzheimer's had a different socio-cultural experience when they were younger than their male counterpart. What I mean by that is the women who are now in their 80s, when they were in their 30s and 40s, it wasn't appropriate for them to be out having really complex jobs. We didn't see physicians. We didn't see scientists.

We didn't see all these more brain operative jobs when they were in their 30s and 40s. So they weren't really having the neuroplasticity. responses that their male counterparts were. So that sociocultural construct of not being out having a job or an environment that created neuroplasticity is directly a risk factor for Alzheimer's. But if we look at today's cohort of women who are in their 30s and 40s, they're out there with the complex jobs and having more neuroplasticity exposure. So we don't know for sure how that's going to play out later.

Yeah. So it is a sociocultural thing that really does come into play when we're looking at what are the differences in longevity for both sexes as well. You mentioned some of the changes that happen when a female goes through puberty and gets exposed to those sex hormones like estrogen and progesterone and also testosterone. what is it that happens when a woman gets into her 40s that is significant for us to know which may then help us understand why strength training and hits training is so important? Because I guess, Stacey, as I've been researching you, more and more, I think one of the key points I want to get across in this conversation for women is why those two things must be done as you. you get older, because I think there's a lot of my audience who might fall into that category.

They're doing really well with, you know, that conventional stuff. They're doing well with the four pillars, but on the movement aspect, I know many women, friends of mine who perhaps are not strength training and are not doing high intensity training, but they are walking regularly and they would probably think that that's enough. So let's go through those changes so that we can make that case. And frankly, if that's all we do in this podcast is make the case of those two things, I think we'd both be really happy. Exactly. Okay. So when we start looking what's happening in perimenopause, most women don't really understand that it could start as early as 37, 38, where we start having more and more what we call an ovulatory cycle. So that means we're not

ovulating, we're not producing an egg. If we're not doing that, then we're not, going to have progesterone, but we will still have a menstrual bleed. So a lot of women don't realize that they're having more and more of these an ovulatory cycles. And what happens there is we start to have a change in the ratio of our estrogen and progesterone. So when we're looking at our reproductive years, we go through reciprocal change every 28 to 35 days with our menstrual cycle where we have estrogen that comes up, then we have estrogen progester that comes up and then it drops down, then we have a bleed, and it's a repetitive cycle. So our body gets used to this rhythm and the specific ratios of estrogen progesterone. When we start getting into our early 40s

and having more of these in ovulatory cycles, there's a change in these ratios of estrogen progesterone. Why this is important is because these sex hormones affect every system of the body. Primarily estrogen and progesterone together work to improve. bone density. They also work to help with our blood glucose control, our resting blood glucose. It helps with how our body fuels itself at rest, using more free fatty acids and having a conversation between the liver and the muscle that says, you know what, we want to use these free fatty acids. We don't want to store them as visceral fat. And we also see that estrogen is tightly tied to how our blood vessels respond to things like hot and cold, how they will

constrict and dilate. So our blood pressure is very tightly controlled. When we start losing more and more of these hormones, we start to see a stiffening of our blood vessels. So we don't have as much what I call vascular compliance. So our blood vessels are very slow to constrict and to dilate. So it affects our blood pressure. We see that we have a change in how our body will fuel itself. Well, we'll see more insulin resistance. So that means that we have an increase in a resting blood glucose. If we don't do something, then we're going to end up in a pre-diabetic, potentially a metabolic syndrome type situation. We also see that progesterone is tightly tied to what we call our vagal tones, or our ability to become more parasympathetically activated.

When we have a change in these ratios, we see women are very tired but wired. They just cannot relax. So we see an increase in our baseline cortisol. So cortisol is not an evil hormone. Everyone says, oh, you know, my cortisol is elevated. Well, we have natural responses. It's just now our baseline is a bit higher when we respond more significantly to small stresses during the day, which also doesn't help with longevity and cardiovascular health.

So when we start looking at something like resistance training, why is it so critical? And we hear conversations out there where I'm talking about we want to lift heavy loads, other people like just regular strength training. The very first thing that happens before we see a loss in lean mass is there's a disconnect the way our muscles contract because we have a change in some of the expression of our contractile proteins. So if we think about muscle contraction as a ladder that's coming together, we have myocin and actin,

and they bond together to pull fibers together to create a contraction. When we start losing estrogen, we start losing the ability for myosin to hold on to actin strongly, so we become weaker. We don't have as much power. When women are talking about this, they're like, I can't open the jar of pickles anymore.

I have a really difficult time opening a jar of pickles because my grip strength isn't there. I might be a runner, but now all of a sudden my running pace is really slow and I don't know why. Their body composition hasn't started to change yet, but their overall strength and power has. Then about a year or so later, we'll start to see a significant loss of lean mass and an increase in body fat. There are two things that are going on here. One, we have that disconnect of estrogen and the way that it's affecting our muscle contractile strength, but we're also having a change in our gut microbiome. Because when we start losing our sex hormones, we start losing some of the gut bugs

that are responsible for some of the ways that these sex hormones are able to be pushed back out into circulation. So we have a decrease in the diversity of our gut microbiome. And because women are tired but wired, the bacteria that grows is more of a firmacudis phyla. So that means it's more of the Obesogenic phyla. So this encourages the body to hold on to body fat. So when I bring it back down to what are we going to do to counter this because we can't counter what's happening with the down regulation of our estrogen progester receptors or that our

ovaries are starting to wind down naturally. So we look at those external stressors. Resistance training for lifting heavy loads. It's going to create an adaptation that makes mycine and actin hold onto each other strongly to be able to have a central nervous system response for really strong muscle contraction. If we look at high intensity interval training and when we talk about it, it's like true polarize, we're going as 80% to 110% of our max. and then having significant recovery between each effort,

this creates a change that allows our muscles to pull carbohydrate in and glucose in without insulin. It also creates more of a conversation with what we call myokines, which are hormones that are released from the skeletal muscle, to circulate to say, you know what? We don't need these free fatty acids to be changed and stored as visceral fat. We need these free fatty acids to be used as fuel. So it improves the way that our mitochondria are using our free fatty acids and improves our metabolic flexibility.

So when we're talking about why resistance training is so important, it's all about maintaining strength and power as well as lean mass. Why is high intensity interval training so important? It gives us much better metabolic control and more feedback to reduce the buildup of that data. dangerous to this role of fat. Yeah, really, really clear. Okay, so, once a woman goes through perimenopause, there are certain hormonal changes that take place,

which, unless we do something about it, may well have a negative impact on things like our bone density, our blood glucose, our metabolic health, how much fat we can use and burn off, at various times, and also the state of our nervous system and how stressed out our nervous system will be compared to how relaxed our nervous system will be, right? So there are some changes that occur. Okay, now, through the lens of evolution, how would you say those changes perhaps made sense in a different era, if you would argue that they did make sense?

This is the million dollar or with inflation, the one billion dollar question that is out there because there's many theories about it. Just taking a quick break to give a shout out to the brand new formulation of AG1, one of the sponsors of today's show. Yes, you heard correctly. I am delighted to announce.

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and use coupon codes live more. to save 20%. One of the theories is that women go through all of these changes and if they survive them, then they become a part of the tribe that's able to take care of the children, take care of the other people that are within the tribe without the risk of having a baby itself

or contributing to a greater calorie need. There's other theories out there that women didn't actually live long enough to go through this. So this is a relatively new industrialized revolution kind of thing that women are going through. And then there's the other theory of it just happens and no one talked about it until now. So what is the evolutionary thing around it? No one really knew because no one really talked about it. So when we look from like a modern kind of standpoint of what's happening, it doesn't make sense.

Like, why would this happen to just women and not men? Other than we think, okay, well, we're looking at it's all from a reproductive standpoint. Puberty is the onset of reproduction. And perimenopause and postmenopause is the kind of die-off of reproduction. But that doesn't mean the woman isn't viable. It just means that she's no longer viable to have kids. And, you know, how does that play into things? When we look at how our sex hormones affect all, every system of the body, most of the time when we're looking at the menstrual cycle, estrogen progesterone have two very distinct, I guess, rationales for being in the system, in the ratios that they are.

estrogen is creating a very stress resilient body to have a very robust egg to be released for ovulation to really make sure that that is a viable egg if it's fertilized. And then progesterone's whole job is to shuttle amino acids and carbohydrate and all the building blocks to build a beautiful lush endometrial lining to house this very viable egg. So when we aren't in a reproductive stages anymore, we don't need these hormones, then we don't need to have an endometrial lining. We don't need to have as much stress resilience. So there's so many different questions in there that people haven't really started digging into

because none of this has been in conversation until recently. Yeah, it's just so interesting, isn't it? I love to look at things through the lens of evolution. And of course, there are all these theories. We don't know. There's also the grandmother hypothesis and what, you know, is the role of the grandma that we, you know, we can live. Females can live way beyond their reproductive lives so then help and pass on wisdom. And it's beautiful to even like explore all these things and think

about them. At the same time, we do live in a certain world today. There are certain things that men and women are doing, are expected to do. They expect of themselves to be able to do. And perhaps a more helpful question, at least, for a woman in that age category, is to go, okay, well, sure, things may have been in a certain way 50,000 years ago, but I want these goals in my life. I'm going to have these hormonal changes in my late 30s and my 40s. What can I do to start changing things or to negate the impact of them, okay? So I want to go in depth into strength training and hit training and how people, actually do that. Just before we get there, though, a lot of women have been on or are currently

on birth control, so the oral contraceptive pill. How does that potentially change things or influence the things that you've just been talking about? You won't know if you're in perimenopause because the whole goal of an oral contraceptive pill is to down-regulate your own. own ovarian function and take the place. So if we're looking at someone who is on an oral contraceptive pill, if it's a typical what we call monophasics, where it's three weeks of the standardized estrogen progesterone dose, and then you have a sugar pill week, those three weeks, from a cellular standpoint, you're getting 500 times the dose of what a natural or your normal ovarian hormones would be exposing these cells to.

So if you've been on an oral contraceptive pill for 10 and 15 years, your body has a different baseline from hormone exposure than what a natural cycle is. It doesn't mean it's bad, it doesn't mean it's good, it just means it's different.

So if we need to understand how your body is through perimenopause is coming off the pill. And when you come off the pill, then your body's own ovarian function should kick back in. But what happens when women get into their 40s and they've been on an oral contraceptive pill for so long and their GP is like, you need to come off it, they're like, okay, I'll come off it, but then why? So often it's, we'll get off an oral contraceptive pill, will give you an IUD and see what happens, a way to kind of have a bridge between a high dose of exogenous hormones into what your body naturally sets in.

or some GPs who are 100% educated in everything that's going on, we'll go from an oral contraceptive pill into menopause hormone therapy. So then a woman's body never really understands where her own ovarian function does or doesn't do. So it's not good or bad. It's just a different profile. How do we mitigate the changes? We treat every woman the same

because what happens, regardless if you've been on exogenous hormones or not, you still have a natural downregulation of all your receptors. It's just part of the aging process. It's when does it happen for someone who's been on an oral contraceptive pill versus someone who's not? We also see there's a significant difference between women who have medically induced menopause as well. Because the whole idea from an evolutionary and a biological,

standpoint of perimenopause is this slowly unwind the body from having the exposure of these hormones. So this is why we see changes in all the receptors. And when we're having changes in all the two receptors is when we start having all these symptoms. So if someone is experiencing medical menopause, they'll go into surgery premenopausal. They'll come out postmenopausal. But the severity of their symptomology is incredible for six months afterwards. For someone who's on an oral contraceptive pill, and then all of a sudden they stop, they too could have really severe symptoms because they've gone from a high dose of exogenous hormones to nothing.

So it's a case-by-case basis in trying to figure out, okay, what is actually going to happen. But if we take it a step back and say, let's look at exercise and nutrition as a way to create an adaptive response, so that our body is overcoming these hormonal flux, then let's do that. So that's where we look at strength training and high intensity work. Yeah, I love that. You did mention there menopause hormone therapy. I'm going to come to that a bit later because I know you don't particularly love the term HRT and you frame it slightly differently.

So we're definitely going to cover that. Where we're up to, I think, is that we're acknowledging or explaining that as a woman gets older, there are natural changes that are going to happen. And that can have a negative impact on various aspects of your health and well-being unless you do something about it. And I think one of the most beautiful parts of what you put out in the world, Stacey, is that it's a very empowering message. You're saying to women that, look, there are things you can do. There are actually a lot of things that you can do with, yes, your diets, yes, your exercise, but also other areas that can help mitigate those changes. So let's go into detail then on strength and hit training.

Strength training, okay? I think you use the term resistance training. And again, all these terms, I think, often get confusing for people. We say, well, what qualifies? You know, when I'm holding my weight up in yoga or Pilates, does that qualify? Do I need to go to the gym? I can't stand the gym. You know, all these kind of things. So let's slowly unpick it. When you say resistance training and lifting heavy, what exactly do you mean by that?

So resistance training is the umbrella term of a push pull against your body, meaning that you are pushing or pulling a load that is heavier than just your body weight. And this is how we increase our overall strength or power. When we're looking at lifting heavy or specific strength training, this is when we're getting in the nuts and bolts of how we do it. So if we're looking at strength training, this could be anywhere from air squats and push-ups to tire flips and Olympic lifting. When we look at heavy lifting, this is the power end

where we're trying to really use central nervous system responses to increase our muscle capacity, meaning our ability to have a very strong muscle contraction, a fast muscle contraction, and a stimulus to build and keep our muscle itself and our bone. We look at the other end, which is more of what women are more comfortable doing in the 40 onward set. This is our higher reps, our lower loads, our Pilates, our boot camp, that kind of stuff. that fitness world will say tones muscle, but when we're looking at it from a physiological perspective,

it's more of a metabolic stress. So it means your muscle is working. It's learning how to use fuel, but it's not really getting the stimulus to become stronger from a nervous system standpoint. And it's really important to understand the distinctive differences between those because when we're looking at perimenopause into postmenopause,

the two really critical things that we need to remember so that we can age well and not get old is we need to be muscle-centric and strong. So if we're looking at how estrogen really stimulates what we call the satellite cell or the stem cell of muscle, and now all of a sudden we don't have estrogen to do that, we need to find something else that's going to stimulate the stem cell of muscle to keep building muscle. We also see that estrogen is tightly tied to myosin, that muscle protein that I was talking about earlier.

So when we lose estrogen, myocin is kind of like, I don't know what to do. But if we have a heavy load that comes in, then myacin's like, oh, okay, I need to bond to that other one really strongly because I have to lift this load. And then the other thing, estrogen is tightly tied to where we store a neurotransmitter called acetycholine. And acetycholine is what helps the nerve jump what we call a gap from where the nerve is conducted down to where it stimulates the muscle itself. So it has to have a little jump. And acetylcholine is like the boat that allows that to happen. When we don't have a lot of estrogen, then the amount of acetylcholine that's there is reduced. So we don't have the capacity to have a really fast nerve conduction coming over.

So when we're looking at the power-based end of lifting, the heavy lifting, it's that external load that is now going to tell the central nervous system, hey, you know what? We need more acetylcholine there. Not only that, we need to have myocin bond to actin really heavily and strongly. and we need more muscle fibers in itself because we need more muscle to contract to lift this load. Whereas if we're at the other end where everyone's talking about strength training as in Pilates and Boot Camp

and more wraps less load, we don't have that same stimulus. We have a change in the muscle where we're using more carbohydrate and we're using more ATP and we're having that metabolic response. but it's not going to benefit women who want to be able to be living independently when they get to be in their 80s and 90s or beyond.

Because they will not have had the stimulus to create a very strong muscle-centric body. Yeah. There's so many interesting points there to unpick. Okay, the first one for me is you mentioned the phrase muscle toning. And for those of you who were just listening, Stacey put toning in inverted commas as she was saying that to me. Okay. So I think this is important because I think we need to address often the elephant in the room, right? Yes, people want to improve their health and their hormonal profiles.

But I think it's fair to say that vanity is also important to many people, right? And it's as if you can't really say that anymore. And I guess coming on from that, then, is, what do you think of the phrase muscle toning? And are these changes or these recommendations that you make around strength training and hits training, are they going to help women with their physique and losing belly fat as well as their hormonal profile and long-term health?

it will do more for them in a shorter amount of time than if we're following the traditional fitness muscle toning type workouts and I say muscle toning with air quotes or inverted quotes because it is a fitness phrase it's not in physiology it's not in any strength and conditioning journal

it has just become something that has gendered the language around strength training. So I like to bring it into perspective where the strength training world is very, very gendered and sexist. Because if you are a woman now who goes into a traditional gym and you're very uncomfortable with your body composition and you want to look to lose weight but you don't necessarily want to say that, unfortunately go to most of the gym chains who are out there and there's a gazillion of them, a woman will come in and they'll say,

oh, here's the class schedule for all our spend classes and our boot camp, but they won't be directed to the weights. Whereas a guy will come in and might have the same thing where I want to change my body composition, I want to feel better about myself, and they'll say, okay, how much muscle do you want to gain? Here are the lifting platforms. So we're already up again. it as a woman walking into this situation of strength training and the gym. So if we say muscle toning, that is a gendered language to make it seem like it's okay for women to be lifting lighter weights and they're doing strength training. But it's not the same. It's more of a metabolic stress. But if we're going to look at a metabolic stress and we want to change our body composition

and we want to look good for summer, then we need to really put in the work. It doesn't mean spending 90 minutes doing a workout because that puts women's fully in a metabolic stress that is too easy to be hard to be zone two or recovery or relaxation or improve our parasympathetic and is way too easy to be hard enough to instigate any kind of adaptive change that we want for body composition and longevity. So when I talk about muscle toning, I get very frustrated with that because it's such a gendered term that has no place in any of the conversations that's going to improve women's confidence and to break through this barrier of the sexism that exists in the strength training world. Yeah, I appreciate your clarity with that.

As you were talking then, I was reflecting on my own experience of working out as a man. And, you know, I don't go to gyms now. Having said that, I do a lot of body weights. I do a lot of strength training in my garden, which we can talk about later for sure. But you're right, that phrase toning, it doesn't do anything for me as a man. I'm like, yeah, whatever. You know, I do associate it as a female term. And it's, it is incredible when you think about it. It's just pure marketing. It's pure marketing, isn't it? It's pure marketing. And of course, you know, again, without being overly prejudicial to men v women, of course, it is designed to appeal to one sex more than another. And then I guess you mentioned time there.

So I wanted to go at Pilates, and I'm not trying to pick on Pilates here at all, it's just because you mentioned Pilates, okay? Because I'm sure there's plenty of women and men listening to this podcast right now who do enjoy Pilates and have found it helpful for maybe their back or their core or whatever it might be. And you as well. Okay. Yeah.

Great. So this is where this nuance gets missed these days. right? Absolutely. So, Pilates, okay, you're not against Pilates, I'm guessing, but you're saying that actually Pilates per se will not be doing what you're asking women to pay attention to once those hormonal changes start to kick in,

potentially at the early age of 37, right? Correct. Yeah. So if we look at Pilates, it is... I shouldn't say it's not strength training because it is very muscle-centric. But Pilates is designed to be more isometric and to give lots of proprioception, balance, control, breath work, which is all really good things. We want all these things. But when we're looking at building strength for longevity and creating power and looking at how we are going to encourage lean mass and bone to develop and stay, we need to.

heavier loads than what Pilates offers. So when women are like, oh, you're so anti-Pilates, no, it just isn't the bread and butter of your strength training. When I'm talking about lifting heavy loads, we're minimum two days a week, preferably three. And if you really love Pilates, you can do Pilates in there too. I don't want to take away people's soul food. I'm saying if we're looking at what optimizes a woman's body

as she's going through perimenopause and into post-menopause, because what we do in perimenopause, we want to carry it through the rest of our lives. There are things that you can optimize from an external load to really create a stress-resilient, strong frame, both mental and physical frame, to carry you through to your late years of life. And we also have room for soul food. For me, my soul food is going and riding my gravel bike for hours and hours. But that doesn't fit into hit and strength training, but it fits into what I call soul food because it's good for my brain. I like being outside, see my friends. So Pilates can fit in there.

Yeah. It's kind of interesting. It sort of implies to me that even the words exercise or even movements perhaps is too broad, right? Because by saying one pillar of health is movement, which I say, and I agree with, okay, and I wrote a book with that in it, right? So it's not that I'm necessarily disagreeing with that, but the problem is then, is that different movements, different forms of so-called exercise provide different stimuli to the body and therefore different adaptations. So we as a society have to be more specific with the adaptation we require. Once we know the adaptation we require, we can choose the right movements or exercises to give us that adaptation.

So going back to Pilates then, and again, I want to emphasise that we're not picking on Pilates here, okay? When I had a bad, but I did polices for years, okay? I don't anymore, but I did for a long period of time, okay? Time plays a role here, right? So if let's say you're a woman, you're 40 years old, or, you know, whatever. But let's say you're 40 years old, and you go to a one-hour Pilates class a week. You know, you're busy with, you know, whatever work, being a mom, like the things of life. But you've found time to go to a one-hour Pilates class a week, and perhaps you go for a few walks throughout the week when you can.

If all you have is that one hour outside those walks, perhaps, to dedicate to your health and well-being, I guess then the further question is, Is that the best use of your hour, or might you, Stacey, argue that if you've only got an hour, you might want to do three 20-minute strength training sessions instead of Pilates? Or help us think about that a little bit for the woman who's time pressed. Yeah, I mean, that's almost who I talk to every day. Okay. Women who are in their 40s, they're working, they're married, they have kids, or they have a partner and they're not married,

but their lives are very full. I have a group of women who say they're the 5 a.m. Club because they have to get up and get their stuff done and be back by 6 a.m. So fully understand that. So if we're looking at a woman who has maybe one hour a week that she can dedicate for herself, And then, like you said, throw in a couple of walks here and there, maybe after work or on the weekend, we have to look and focus on that one hour.

What can we do? Maybe we can split that up into three 20-minute strength training sessions, but that would require, you know, three separate days and maybe she only has that one hour. So if I were to look at that one hour, I would structure it into three 20-minute segments where the first one is we're doing lots of mobility work so that we make sure that. that we stay injury-free, so we're looking at opening the joint capsules and creating more range of motion, so it's not stretching, but it's working on proprioception, it's working on in-range, it's loosening up the tendons and the ligaments. Then I would do 20 minutes of compound heavy resistance training. Then I would finish with some spread interval work. So this would be 30 seconds, as hard as you can, 110% effort.

and then you have two to three minutes full recovery, and you might do that two or three times. Salt bike's great for that. Maybe you're doing kettleball swings, but that stimulus at the end of the mobility and the resistance training is what you need instead of a 35 or 40-minute hit class. So if we're looking at that one hour, and you can do that once a week,

that's a bare minimum that's going to help create the impetus for better body composition change and brain health. because the other thing about heavy resistance training is it works on the neuroplasticity of the brain and when we're looking at neuroplasticity, we want that because we want to be able to maintain our ability to have cognition

and not experience cognitive decline. Yeah. And then you can look at your walks. Maybe one of your walks with your dog, you go, okay, well, instead of just going on this normal 3K walk with my dog, I'm going to take the dog and I'm going to divide that 3K up and maybe I'm going to pick up the pace for a minute or two and then I'm going to have a minute recovery.

So you take that into a hit session. So there's ways of looking at what you're doing during the week even if you are time constraint. I have some women who are on the early crew for the breakfast shows. So they're getting up at 2.30, 3 o'clock in the morning to be on set by 3.30 or 4. and they get up and they do a 10-minute high-intensity with kettlebells to wake themselves up, but it also helps with the circadian rhythm shift that happens when you start doing those kind of night shifts.

So there's things that we can do with very short amount of time that's going to maximize our adaptations to improve all the things that we need to improve for better metabolic and body composition. Yeah, I guess so a helpful perspective or helpful framing for someone to think about this might be, once I become perimenopausal, I am undergoing certain hormonal changes. And there are two particular things that I need to be focused on in terms of my movement as I get older, as a woman, right? Resistance training and hit training. So I guess you would argue, I think, that It's not that you're against Pilates or yoga or walking.

Those things are all great and you would encourage those things. But you have to be aware that those things are not addressing a lot of those hormonal changes that are kicking in. So do them and do the other stuff. But if you can't find time for the other stuff, maybe that should be where your priority is first. Is that an accurate representation of how you would look at this? If we have minimal time, let's make the maximum gains.

So if we have minimal time, let's make sure that we are working hard and recovering from that hard work. Okay. So we have covered strength training, but I just want to make sure that it's super clear. Okay, so you mentioned that this is the power end of the spectrum. I'd love to understand what does that actually mean? And are you talking about, you know, the heaviness of the weight? You also mention speed, right? So is it the speed at which you pick it up? Because I'm guessing that, you know, a kettlebell swing, for example, depending on what weight you use, has got a degree of intensity to it. Whereas, I don't know, if you're doing a heavy deadlift, for example, are you asking women to not only pick up heavy, but also pick up heavy fast?

Are both those inputs as important as each other? So when we're looking at the strength training component, it's about lifting the heavy loads. So this is your zero to six, maybe seven reps. We like to talk about as reps and reserves where I'll tell a woman, go pick up the dumbbell that you usually pick up for your shoulder press or your bench press. And then I tell her to put it down and pick up the next one. Okay, let's try to do that movement with the next one.

How many reps can you do? Most of the time, they'll eke out 10 to 12, tell them to put that down and pick up the next one. and that's their starting weight. Because most women are so conditioned to undervalue their strength, they don't lift heavy enough. So it is a phase in because when we're talking about this, it's a learned skill. So if someone's never done any kind of resistance training,

they're not going to hop into the really heavy loads right away. It could take up to six months to a year to learn how to lift heavy properly. So in that time frame, yes, you're going to be using lighter loads and more reps. You're trying to condition the muscle and the tendons and the ligaments. When we start adding the speed component, and that's part of strength training from a ply metric and an intensity standpoint, and that's different. So we can use that as a metabolic stress, but we're looking at specifically the power-based end of strength training.

This is where we say it's a zero to six to maybe seven, eight reps, and we do a periodized program with that. And then if we're looking at the phthalmetric stuff, then that can be put into high-intensity interval training or it can be sprint interval training. Okay. So for the strength training, you want to focus on power, lifting heavy, a weight that you can perhaps lift six to seven times. And you want to repeat that. Like, you do that, let's say you lift that weight six times. You have a rest, and then you repeat that a few times? Well, this is where you have to look at what kind of programming you're doing. Okay.

So we say a typical example is the five by five where you have five sets of five reps with two to three minutes between each set. So you would do five heavy deadlifts, rest two minutes, do another five heavy deadlifts, rest two minutes. And probably by the time you get to the fifth set of five, you're like, I can't finish that five. So you're almost too fatigue. And that would be a really good heavy lifting session. So when we're looking at five by five, that's what we talk about. Okay.

For the woman who hates gyms, right? Who, for whatever reason, they don't like going to gyms, okay? What are some things that they can do at home? I appreciate you might need some instruction and there's a risk of injury and you have to build up slowly. You know, I understand all those things. but for someone who feels that they could and they want to start strength training, but they want to do it at home.

I mean, for example, I've fallen in love with sandbags over the past year. So I've got these sandbags in the garden. I've got a three or four. And one of them I've underfilled a bit. So I know the kids can carry things. I'm trying to just gently encourage my children to copy me and mimic me, which is semi-working, depending on what day of the week it is. But what about a sandbag, for example?

If someone has that in their garden, can they just lift a sandbag over their head five by five? Or what are some other options for people who want to do all of this at home? Yeah, I mean, you can start with loading a backpack up and using that with air squats, right? So you can put canned goods or you can put a sandbag in your backpack. So there's ways of adding external load while you're at home. there's some really fantastic apps available now too of guiding women at home first through resistance training body weight into adding load at body weight I mean adding load with their body weight and it could be buying a couple of kettlebells it could be using sandbags it could

be old tires that you're using tire flips or maybe you're doing dead lifts deadlifts with old tires like there's lots of things that you can do that doesn't require you to actually go to a gym it's understanding what your environment is, how you feel about being by yourself working out or do you need a partner to work out with because community is huge. We see women really gravitate, especially if they have a lifting partner or a friend who's on the same journey, see better adherence and better progression when you have community around you. So it depends on the individual.

But everything is totally doable at home. It depends also on what you want to invest in. But starting out with your body weight and then adding load through a backpack or sandbags like you're talking about, a weighted vest, anything like it's going to add a little bit of external load, it's all extra stress on the musculoskeletal system that is going to benefit you. But when we start talking about the true power base loads, this is where we have to look at using gym equipment. Like I have a rig and stuff in my garage because I don't necessarily want to go to the gym. but I have the capacity to lift heavy in my garage. But that's an investment that people may or may not want to make. So, yeah, it's where you are in your journey.

And let's figure out where you are in your journey. And maybe it's connecting with the Betty Rocker or Haley Happens or Loretta loves lifting that all guide you through starting the journey. And then boom, now you feel confident to go to a gym. Yeah, I love it. And I guess the key point is if you're not lifting, heavy, there are certain adaptations which you're just simply not going to get, which you probably really, really want to get as you go through perimenopause and beyond. Because frankly,

what we're talking about, I know I've mentioned the age 40 quite a lot so far, but it's not just that you need to do this when you're 40, right? This is kind of the pattern for the rest of your life, like through the menopause, even into postmenopause. In fact, you've got this quite catchy phrase, don't you be the oldest person in the gym, not? the youngest person in the nursing home? Exactly. Yep. And I like to point out the Instagram account, train with Joan.

So Joan is 72 or 73 now. She started her strength training journey in her late, was it, late 60s, mid-60s? She hasn't been lifting very long. But she was facing a lot of the typical things that a peri post-menopausal woman faces this extra visceral fat game, pre-diabetes, low bone density, and her daughter's a personal trainer. And she's like, I want exercise. I don't want drugs. So she started strength training. And now she is this phenom who started lifting late and is benching 55 kilos as her bench press. And she's deadlifting 100 kilos. And it's just the progression that she's had. And she's a really

great image to show what heavy lifting can do for you. And I think one of the reasons people gravitate for is muscle toning. So they're afraid of getting bulky. But it's really, really, really difficult for women to get bulky unless they have a genetic predisposition for it. And that's a rarity. So one of the other fears for women getting into the gym and start doing the power base stuff is they don't want to look like all the CrossFit athletes or the power lifting athletes. They work really hard to build that muscle and keep that muscle. If you're a woman who's just doing the strength training,

the power-based stuff and eating well, you're not going to get bulky. You're going to get strong. You're going to have really good cognitive faculties and you're going to have really strong bones. And those are the things that we're after. We've mentioned stress before and how, you know, a lot of women, a lot of men as well, to be fair, but let's keep this on women.

A lot of women feel, particularly in midlife, that there's a lot going on. There's a lot of having to juggle, and they're dealing with a lot of chronic stress. We know that different forms of exercise can put different levels of stress on the body. So for that woman who does feel chronically stress and that they don't have much time, is there a risk that strength training and lifting heavy is going to be an additional stressor which can cause problems? And I guess piggybacking off that is a phenomenon that I've seen in patients before Stacey. I've got a few people in mind actually. Let's say a couple of those patients had autoimmune disease that were quite unwell and tired. And, you know,

for a variety of different reasons. But in order to get going, they would hire a personal trainer, which I think if you have the budget and you have the resource can be fantastic, for sure, but of course not everyone does. But what I notice is a lot of the personal training sessions are one-hour sessions. And sometimes I have seen women who would go and do these one-hour PT sessions, and it would almost be too much for their immune systems. that was, you know, they'd come out and viral outbreaks or they'd get sick.

And I've seen that a lot. And I think one of the things you talk about, which I really like, is that actually you probably don't need to lift weights for a whole hour, right? Maybe even 20 minutes of lifting heavy will give you a great stimulus. So can you address that point, but also the more broader point, which is what does strength training do to our stress load? Yeah. So I'll start with what does it do to our stress load?

stress load. If we are lifting properly, and what I mean by that is if we have the goal to go in and do heavy loads, it's not a metabolic stress. So we're not going to get the subsequent increase in cortisol and not have a response to counter it. So when we're looking at a central nervous system response, we'll have a lot of women who will go to the gym and I'm like, look, we want you to go in and we want you to assess, how do I feel mentally on a scale of 1 to 10, How do I feel physically on a scale of 1 to 10? Often, they're front up and they're super busy and they're tired and they're like, mentally, I feel like a 2. Physically, I probably am a 6.

Okay, so let's warm up. Let's actually do a couple of heavy lifting reps there because often we see that that sparks up central nervous system. And then mentally, they come up to that 6. And then as they go through their session, they feel tired, fatigued. but elated. It's different from tired but wired because it's not a metabolic stress. And when we're talking about the heavy loads,

it can only be 20 minutes if we're doing compound movements, if we're doing heavy squats or we're doing deadlifts. We focus on that compound movement for 20 minutes. It opens up and it stimulates central nervous system. It doesn't invoke a metabolic stress which a lot of people associate with heavy loads and hard classes where we've been conditioned to feel smashed at the end,

we don't have to do that. So that's the beauty of strength training is you can have a really solid session and walk out feeling good and not smashed. And this is the one thing that I really am trying to educate women, that the idea of having a sweat session and feeling smashed at the end of, of a class or at the end of an exercise session is not the norm.

There are some sessions, yes, where we're looking at doing a true high-intensity interval session when we are doing sprint intervals where, yes, you're going to get sweaty, but you shouldn't feel smashed at the end. Because we've all been so conditioned that we have to go to a 45-minute spin-in class and hit it hard for 45 minutes and come out feeling sweaty and just completely smashed by that class or boot camp. class. But that's not the load that we want. Yeah. So maybe perhaps the take home for an individual, but also let's say there's a personal trainer listening to our conversation right now who trains a lot

of women and is recognizing, wow, yeah, actually, sometimes one hour of pushing my client is too much for them. So they keep getting injured or they're knackered and they or they come down with a cold. So they having to cancel the next session, because this happens a lot. Perhaps it's about thinking up new business models, so could I offer 30-minute sessions? Or I guess it could even be maybe in that one hour. After a 10-minute warm-up, we only do 15, 20 minutes of strength training, and then we work on mobility and, you know, other kinds of things. Again, I'm not trying to tell anyone how to do their job, but does that sound like a reasonable

approach for someone to take, perhaps? Absolutely. Absolutely. And the other thing I'd like to remind women is that we have a societal pressure where we have to follow instructions really well and we can't apologize or we over apologize and we can't take control. And I tell women, look, you're paying for the PT session. You're paying for the CrossFit class. You're paying for the Orange Theory. You're paying for these things.

Make it work for you and your body. So if you go and you hire a PT, you should have a relationship where you could say, you know what, for my body in perimenopause, these are the things I need to do. I need to lift heavy for a shorter period of time within this hour. And I need to really spend a long time warming up so I don't get injured. So let's make this work for us where we have mobility, you know, get into the heavy lifting and it takes time to warm up to be able to execute the heavy loads. properly and then have a really good cool down. Or maybe we're going to split that hour up where we're lifting for one half of it and then the other we work on some sprint capacity. But you have to have those conversations. Otherwise, you're just going to show up and they're

going to tell you what to do and it might not be right for your body during this life phase. Yeah, I really appreciate you saying that because I've, I mean, you do see this in men, of course, as well, but I've definitely seen this in female patients before where they come in and say, yeah, but the class was doing this or the person in the gym wanted to do this. And I didn't feel I could say anything. And I guess that's a much wider point about finding our inner voice and actually, you know, trusting ourselves and having the confidence to speak up for ourselves and say, I get that you want to run your class like that, which is fine, but I'm not going to do those two things at the end. Or that doesn't work for me. But too often we're scared about

fitting in and not offending anyone. And, you know, I think that's a, that's quite a very, very, very, very important point that I think you just raised there. So hopefully that will give a lot of women that confidence. Strength training, before we just move on to hit training then in detail, just remind us, Stacey, if you will, there are certain changes that happen once a woman hits around 40, or that it probably starts a bit earlier. And you're saying that strength training is one very effective way to mitigate some of those changes. Just top line, us of the changes that strength training does, which helps us in that regard? There's so many things, but I'll try to be brief. So we look at improving our overall power

and our strength capacity, so that means our grip strength, our ability to carry our groceries, our ability to write ourselves if we step off a curb wrong. So all of these things that are part of life. We see that the central nervous system involvement helps with neuroplasticity, which is brain health, which helps reduce the risk factor for cognitive decline. We see that strength training improves their gut microbiome, which means that now we have a better diversity, which reduces the stimulus for an obesogenic outcome of our gut microbiome. And we see that it's a pushpole on the bone, which improves our bone density. So, those are high touches. When we look from more of a cardiovascular standpoint, we can also see the

strength training helps with our vascular compliance, so it helps with our blood pressure. We see that improves our metabolic control as well. So the more lean mass we have, the more active muscle we have, the more we have of a glucose suck. So that means that we have better blood glucose control. So there's so many things that happen through pari menopause that if we're we put strength training in and become more muscle-centric, where we're building our muscle, building our strength, our power, our bone, then it also attenuates some of these side effects that we see from perimenopause that women really are like, oh, I'm putting on the cereal fat, I'm losing my lean mass, I'm getting weak, and my resting blood glucose is suddenly in the pre-diabetic

range. Strength training helps with all of those things. Yeah, I mean, you've made the case, increase in your power, increase in your balance, your strength, central nervous system responses, reduce risk of Alzheimer's, increase in bone density, lowering your visceral fats, improving your body composition, better blood pressure, better cardiovascular health, better metabolic health, better glucose control, all of which you can directly address by lifting heavy for a small amount of time several times a week. So we've made that case, Stacey, I think. You've made it beautifully. And for the men who are listening, we're also going to get a lot of those benefits as well, even though we don't have those hormonal changes, we're still going to get incredible

benefits, aren't we? Absolutely. Because as we age, both men and women, we become more anabolicly resistant to exercise and protein. So the more strength training you put in, the more your body responds to building muscle and building bone, both men and women. So, yeah, it's just when we look at aging, we see women have this definitive point in time where all of a sudden they're feeling the effects of aging and it's perimenopause. Whereas men age in more of a linear fashion. We see a blip in their 40s and we see a blip in, in their 60s, but it's not as overt as what's happening to women in perimenopause. So there's almost a sense of urgency for women. Like the biology is changing, your physiology is

changing. And I mean, would you say that's fair to say that your message is, it's one of empowerment, but it's also one of urgency. Yes, you've acknowledged Joan who started training late, so it's never too late at the same time. Why wait until your 60s and 7? If you can get the message now, why not start in your 30s? Yeah. And I say this coming from an incredible endurance background. Like I was an ultra runner. I raised Iron Man.

I raised road bikes. I did XTERA. Like, fully vetted in endurance world. But strength training is something that was exposed to me early days, but I didn't really understand the value and the power of it until I, I started working with Marsha Stefanik at Stanford in the Women's Health Initiative data where we really started looking at the outcomes and longevity from Dexas of who had more lean mass and who did strength training versus those who didn't.

So it wasn't really even about attenuating any of the menopausal symptoms. It was about let's look at the viability and the quality of life for women who entered the study when they were in their 60s and now they're in their. 80s or 90s, who's doing the best? And it was those women who were more muscle-centric and strength-oriented. And I was like, okay, now let's really start getting into the strength training thing. Okay, let's move on to the second key exercise that you are recommending women pay attention to as they get older, hit training, high intensity and sport training. That is a term that used a lot. It is misunderstood a lot. So why don't you take it from the top? What is it? And why

is it so important for all of us, but particularly, I guess, for women to do as they get older? Yeah. So globally, Western society has become very comfortable in environments that doesn't challenge the body. Right. We sit in rooms that are temperate. We have food and water available all the time. So when we ask someone to become uncomfortable, they're like, eh, high intensity interval training is the uncomfortable part of exercise that really does invoke positive change. So we talk about high intensity interval training. It is where we're looking at polarizing a session where our intervals are 80% or more of our maximum effort and a recovery can be anywhere from one to four minutes at 50% of our capacity.

Can I just pause you there, Stacey, only because the term polarized, some people who are listening, maybe haven't heard that. If you could just explain what polarization is, but also then when you say 80% and 50%, you're not necessarily implying that people have to get heart rate monitors and measure all the stuff, are you? So could you just clarify those two things, just so everyone's on board with us as we go forward? Sure. So when I talk about polarized, I mean the top end of effort and the very bottom end of effort. We want to stay out of the middle.

Okay. Because the middle is what we call the gray zone. And I mentioned it earlier where it's too easy to be hard and it's too hard to be easy. So you don't really get very much adaptation in that kind of middle zone. So we want the really hard part and the really easy part. And then we call that polarized training. When I talk about 80%, on a scale of 1 to 10, you're hitting an eight, nine, or ten in our efforts. And for our recovery, we're hitting a four or five in our effort. So we're really like, okay, bring it right on down to really easy, trying to recover fully before we hit the next interval. So when we're talking about high intensity interval training, there's also a subset in there, sprint interval training, which I'll get to in a minute. but an example, a really good example of high-intensity interval training is something that we like to say e-mom, every minute on the minute. So for one minute you might be doing tuck jumps or star jumps.

The next minute you might be doing some kettlebell swings. The third minute you might be doing some jump lunges. and then the fourth minute, maybe you're throwing kettlebell swings back in, the fifth minutes fully off. So you have four minutes where you're working probably 50 seconds, so you have 10 seconds to go to the next exercise. So four minutes are pretty hard work, one minute of full recovery, and then you hit the four minutes again.

And that's a form of high intensity interval training. Right. So you release four minutes of work, one minute recovery. So that's high-intensity interval training. If I talk about the subset of sprint interval training, this is where the recovery is really important and it's longer. So with sprint interval training, it's 30 seconds or less, as hard as you can possibly go.

And then you have two to three minutes of full recovery because you're trying to be able to do that interval just as hard if not harder. And it doesn't mean running sprint. The sprint term is really about the effort. How hard can you go for 30 seconds or less? It could be running upstairs. It could be kettlebell swings. It could be battle ropes.

It could be running. It could be a salt bike. It could be rowing org. It could be swimming. It could be any kind of mode of exercise as long as the intensity is at that 10 on a scale of 1 to 10. for 30 seconds or less. And then the recovery is two to three minutes

to fully recover your central nervous system and some of your metabolic capacity to be able to hit that interval again. Most people were like, that sounds really easy. So I have to push really hard for 30 seconds. Maybe I'll be able to do four or five of those. When they first start doing them, after the second one, they're like,

whoa, I'm done. I don't want to do those again. but it's really important to understand that subset versus high-intensity interval training because they do two different things. So if we look at sprint interval training, so that's 30 seconds or less, as hard as you possibly can, with full recovery in between, this is such a strong stimulus and stress to the body that it creates a myriad of epigenetic changes. So this means more permanent changes within the skeletal muscle.

Most importantly, we talk about the glute four protein. So if we think about insulin as a key, it opens the door to the cell to allow glucose to come in. But as we get to be perimenopausal and onwards, insulin doesn't work so well. It's like a rusty key in the lock. It doesn't quite open the door. So that's insulin resistance. We talk about glute four proteins. This is like the secret passageway that opens up and says, hey, glucose, come on in.

So we're doing that super high-intensity work. We start to express more of those glute four proteins. So now we have availability of glucose coming in. And so we really do get the benefit of better glucose control. The other thing with that super-high-intensity work is we now have a greater amount of myokines that are released. So these are those little hormone messengers that get released from skeletal muscle under work. And what the myokine does is it goes and signals to deliver that we don't need to change the molecular structure of these free fatty acids into an esterified fatty acid.

So esterified fatty acids is the form that gets stored as visceral fat. So instead, the myokines say, no, we want them to stay as free fatty acids so that we can pull them into the mitochondria to use it as rest. So it improves our total lipid profile as well. So when you say free fatty acids, you're talking about, in layman's terms, fat, and you're saying that this fat, instead of being stored as visceral fat, which is that sort of harmful internal fat that cakes our organs, that is associated with an increased risk of, frankly, a lot of different chronic diseases,

you bypass that, basically. when you're doing sprint interval training, so this directly is going to help people with their visceral fat, also their belly fats? Is that fair to say? Yes. So that's when we're talking about the metabolic control of things that have changed,

sprint interval training is super important to getting that metabolic control, to being able to have better blood glucose, to being able to have better lipids, to have less storage of abdominal fat, the dicerole and subcutaneous. And because it's such a strong stress, we see the sheer stress on the vessels,

so the amount of blood that's running against our blood vessels, it causes more what we call veg F, which is a growth factor that allows our blood vessels to become more compliant, to be able to stretch and contract a lot faster. So we're getting that sheer stress that's allowing our blood vessels to adapt to then have better blood pressure control.

So when we're looking at all the things that happen to perimenopausal woman from a clinical perspective, we see an elevation in our blood lipids, particularly our LDL and our total cholesterol, a change in our orthostatic tolerance or actually an increase in our resting blood pressure. We see a change in our resting blood lupus because we have more insulin resistance.

So if we are doing just maybe two of these sprint interval sessions a week, we get these permanent changes, these epigenetic changes, that is going to change that clinical outcome for the good. So we get better blood pressure control. We have better blood glucose. We have better blood lipid profiles. And, of course, we have the reduction in the visceral fat cane. Although this is overly simplistic, and of course the body doesn't work like this, right?

Can we say that the strength training that we've been through in detail is better for our nervous system and our power and our balance as we get older? And the sprint interval training is better for our metabolic health. I know they're both links. I know you can't separate it like that, but is it useful to look at it like that? Yep, absolutely. It is very useful to look at it that way. Because when women are faced with what's going on, some women are faced with more scary clinical outcomes

with regards to what's happening from a metabolic standpoint. And they might not be seeing as much decrease in their strength. So they're going to want to put more of an emphasis on metabolic control. So they're going to lean into the sprint stuff. most women start to see aesthetic changes of body comp and that scares them more than the clinical because the clinical is just on the edge

so they're going to gravitate more towards the strength training because they want the power and the strength and they want more of the aesthetic value of building muscle. So it is that individual choice. It's like, but we know these things are happening it's just when I look at the bell curve there are people all over the place.

So from an individual standpoint, It's like, what's the most important point right now that we can work on? Is it the metabolic control and the metabolic outcomes? Let's lean into high intensity and sprint interval training. Is it the bone density and the lean mass loss? Let's lean into the strength training. Yeah. And then we'll add the other one back.

We'll add the other one down the line. Yeah. Okay. This is fantastic. Sisi, really, really clear and very, very, very. practical. If we just focus on hit for a bit longer, I think you've just split hit up into two broad categories. EMOM or EMOM, every minute on the minute, where it was kind of this four minutes of maybe not max intensity, but you know, you're working hard with these different

exercises and then you're having a minute off. So four minutes on, one minute off. And you contrasted that with sprint interval training or SIT, where it's kind of 30 seconds on, as hard as you can, and two to three minutes off. You've just been through the specific benefits of sprint interval training. How does that compare to EMOM every minute on the minute? Is it the same? Is it similar or are there some quite significant differences in the adaptations that we are going to get? Yes, so if we're looking at the hit interval, so high intensity.

Can I just pause you there, so I've got this clear in my head. Hits is the umbrella term, right, which there's many ways of doing hits. One way of doing hit is sprint interval training. Another way is EMOM? Is that accurate? So EMOM is a type of workout in this. there. High-intensity interval training is the umbrella term. Sprint interval training is a subset of that umbrella term. The other half of that is what people typically think of as hit, where we are doing

between one and four minutes of work at 80 to 90 percent or an eight to nine on the scale of one to ten, and we have one to two minutes recovery between those intervals. So another form of hit that is beneficial? Yeah. Okay, got it. So when we look at that, it's more, you're spending more time in intensity that's not quite as high as sprint interval. So you have more of a calorie bearing, which people are concerned about for some weight loss.

You also are creating a greater time under stress that's going to improve mitochondrial health. and we're also improving blood flow because we have more time of muscle profusion so that means we're going to get the impetus for building more red cell, more plasma volume and having better blood pressure control and actual change of a blood flow so when we're looking at what's happening

from a little bit lower intensity and having more time under tension or more time under intensity, it is truly a metabolic response for muscle perfusion, so that means more blood flow to the muscle, more oxygen-carrying capacity, more calorie burn, and you're also building more lean mass in that time frame because you need more muscle to be able to do the activity. The other thing about that little bit lower,

intensity, longer duration is the post-exercise response. So we look at post-exercise response. The big thing that we hear a lot is perimenopausal, post-menopausal women shouldn't do hit training because it increases cortisol. So there's a caveat in there. If you're going to hit class, they try to fill the class up 45 to 60 minutes. You can't hold proper intensity that long. So you will get an increase in cortisol because cortisol is released during exercise, but you won't get the post-exercise response that you need to bring it down because in that 45 to 60-minute class, you really aren't doing high-intensity work. You're in moderate intensity. You're in that gray zone. So if I bring it back and say, we're going to do it properly where we're doing two rounds of four minutes with one minute off.

and you're going to really work to maintain that intensity. Post-exercise, you get a boost of growth hormone and testosterone that drop cortisol. So just like your resting heart rate starts to drop as you get fitter over three to four weeks, your baseline cortisol drops over time. So now you are not as sympathetically driven. You can get out of that tired but wired state.

and have better ability to hit parasympathetic responses. So this is where we have the nuance of what is really high-intensity interval training versus what is the fitness world projecting high-intensity interval training. And that's why I'm like, when we're talking about it, we have to be very specific in what that intensity is and how long we're holding it. because a true hit class shouldn't be any more than 30 minutes. You have a little bit of warm up.

You do true intensity and recovery and you have a little bit of a cool down. A true sprint interval session might be 10 minutes total where you have a warm up, you do a couple of true intervals with recovery and a little cool down. It doesn't take a lot of time,

but they're both very powerful. Yeah, this is great because as we've already acknowledged many people, many women feel time pressured. And actually, a lot of your recommendations are very, very time efficient. Absolutely. You know, really time efficient.

And I think there's a really interesting point that I just want to highlight. We're basically saying that there are certain hormonal changes that happen as a woman approaches menopause. there are things that you can do with specific forms of exercise to mitigate the effects of that. One of those things is this high intensity type work. But if you're not careful, you won't do it correctly and you'll end up in moderate intensity.

So moderate intensity is not giving you the stimuli that you are wanting from the high intensity and I guess, relating to what you just said, because I think a lot about the stress load of exercise in an already busy stressed out population. I know for me, for example, and we'll probably get to Zone 2 in just a minute, one of the things I enjoy doing

is doing one hour on my indoor carol bike at very low intensity. I might listen to a podcast, I might prepare for a podcast, I might, whatever. Because I know it's a very low stress load on my system. it keeps me pretty parasympathetic and doesn't drive me into sympathetic, and it doesn't take me long to recover from that.

But what was really interesting, what you said, true hit, true high intensity, although it feels very intense, actually is not driving you into that sympathetic, overly stressed state. After the workout, it's helping you come down into parasympathetic, into that relaxation state. That's the kind of critical point, I think, for people to understand because it's this whole, you know, stressed out, we're tired and wide, we can't switch off. High intensity is actually going to potentially help with that, isn't it?

Absolutely. And that's the thing, that's a messaging that gets mixed up in when we talk about it in the fitness world. Because there's this big push for high intensity interval training, because we see that gives the best body composition outcomes. But when it's not done correctly, we see so many women that get overstressed, they get injured, they maintain that tired but wired,

they don't see results. But when you pull it back and you actually hit it hard when you need to hit it hard, recover properly from that, then hit it hard again and recover. Then you do get that post-exercise response because your body's like,

whoa, that was a really strong stress. I need to be able to be able to overcome it. So I need to repair the tissues, drop the inflammation, drop the oxidation, and I need to be able to fully relax to garner that adaptation. So we see women who are doing true hit training, then subsequently sleep better. If you sleep better, then everything gets better. Yeah.

I mentioned the term zone two or low heart rate training there. I know not everyone knows what that is, but if I wonder if you could just summarize, where has this push to do more zone two or low heart rate training come from? What is that type of training? And why perhaps is it more beneficial for men than it is for women? Yeah.

So I think the Zone 2 conversation really started on the backside of COVID when we started having more of the Peter Attias and Huberman podcasts. And they were really looking after themselves and started leaning into, okay, what's best for my mitochondrial health? and we see that when you are doing low-intensity work, you are relying more on free fatty acids. And that's fine. But remember when I was talking at the beginning of the podcast about the differences in muscle morphology, where women are born with more of our endurance type fibers,

and men are born with more of our fast-twitch type fibers? So when we look at the endurance type fibers, and what Zone 2 does for it doesn't really do much. Because women by the nature of being born XX already have more mitochondria, more mitochondrial protein, better mitochondrial health, because they have more enduring fibers. Men don't have that as much,

and they are not as metabolically flexible because they also don't have the exposure of estrogen and progester around. across reproductive years, which changes the way that a woman's body fuels naturally. So over the course of the menstrual cycle, we have a change from using more carbohydrate to using more free fatty acids, and we are very metabolically flexible as women. So when it comes down to the zone two, which is a low intensity, you can hold it for a very long period of time.

It's not very stressful. You can have a conversation, and it is getting the heart rate up a little bit, so it's not like you're doing nothing. The whole idea behind it was to improve mitochondrial health and metabolic flexibility. And in men, in a male data, works beautifully. But for women, doesn't do the same thing. It's not that I say you shouldn't do zone two as a woman, but when we're time pressed and we're looking at what's the biggest bang for our buck, zone two isn't it? It works well for men. Men should spend time doing it. And I say, Minge, it's been more time doing it to become more like women

who are already metabolically flexible and have great mitochondrial health. So Zone 2 is what we call our soul food for women. I'm not saying don't do it. I'm saying, just be careful how much you do because it's not going to give you the same benefits as what you're reading in the literature, nor is it going to give you the same benefits for body comp, cognition, and all the things that we've been talking about on the podcast.

that men will get from doing zone two. Yeah. Super clear. Okay, really, really clear. And I guess the key thing you were saying there is, look, it's not harmful to do. If you've got infinite amounts of time as a woman and you want to do a load of zone two

and I guess go for long, slow runs or whatever it might be, whatever your passion is or what you call your soul food, go for it. But you're not going to get the same, adaptations or the same benefits as a man is going to get. So therefore, if you are limited on time, just be careful how you are proportioning out that time. Exactly. Yeah. Okay, so in my own household, we have an indoor carol bike, which sits very near the kitchen. So me, my wife and the

kids are passing it all the time. And I very much love going on it, particularly when the weather's bed or it's cold. I don't have the motivation to go outside for whatever reason. My wife, for example, and me may go to that bike and we may want to do different things. Okay, so I enjoy doing those zone two rights. I'll often put on some 80s rock and it's a switch off of me, right? It's it's fun time for me to kind of do that. But if Ved was going to get on that carol bike for whatever reason, I guess you would probably say, think about some form of sprint interval training, would you say do the 30 seconds all out, rest for two, three minutes, and just maybe do that two or three times, which will take you about 10 to 12 minutes, Max. Is that what you would say if she

was your client? Yes, absolutely. One workout that I really like to give women who are more endurance focused, is like, here's 45 minutes, okay? And we're going to get on that bike, and you're going to cruise along, maybe 10-minute warm-up, super slow, have a couple of pedal-ups. And then on minute 11, you're going to go as hard as you possibly can, and you're going to throw it into big gear, and you're going to go as hard as you possibly can for 30 seconds. See what that power is. See how long you can maintain it. And then the next four and a half minutes, super low intensity, super, super low intensity.

Then on minute six, you're going to hit. it for 30 seconds as hard as you possibly can and see if you can match that wattage or higher 30 seconds only and then cruise it for the next four and a half minutes. So maybe you can do that again, but if that wattage drops,

stop and then just cruise it. So you're getting those sprints and you're still spending some time on the bike because from an endurance spoken person, they like to be on the bike like you do because it's a mental, huh.

But for a woman, we need to throw in those sprints. Yeah. When you are talking to one of your clients, I understand that there are four key areas you look at. Sleep, physical, nutrition, and then mind, body, and the parasympathetic state across all of the above three. Now, when I've heard you talk about this, it's really interesting to me that you start with sleep,

Then you go to physical, and then you come to nutrition third. Why do you come to nutrition thirds and not first? I like people to understand what a physical challenge is like. So we see people who start to implement movement, and they start to feel better about themselves, and they start to feel better in their body. and they're not changing nutrition. And the reason I say that is because it's so much harder

to break through the cultural barriers and the mindset around nutrition to instigate real change that people want to stick with. Where if we have the physicality, we start to see improvements in strength in as little as three weeks. And we start to see changes in body composition in a little as four weeks without dietary change.

Wow. When people start feeling better about themselves and seeing that, then you have a greater impetus on changing nutrition. Whereas if you start with nutrition, people are like, hmm, but is this a diet? Is this a lifestyle? I don't really know. And it's harder to invoke change in nutrition because of all the things that are wrapped around it. But some people want to do nutrition first.

It's just in general, through all of the practice and experiences that I've had, I found that sleeps first because you can't do anything, invoke any kind of change without really good sleep. Then the physical part comes because people are now bracing for a challenge and they want to embrace that challenge. And then they start to feel better and see a new kind of pattern in their life and they want to match in the nutrition to keep feeling better and moving forward in that progression. Yeah. Thank you. I love that. I mean, it would be easy to go into a rabbit hole now on nutrition, but I think I'm going to just park that for hopefully a part two with you at some point in the future. Let me just close off a couple of loose ends from earlier.

We mentioned HRT and how you're not a big fan of that term. Okay, so let's address that. And the context again is there are these hormonal changes that are occurring as women get older. What can we do? What can a woman do to reduce the impact on? them. We've mentioned already exercise in detail. We've hinted at how nutrition can do that. But of course, some women are being told that they must take HRT in order to address that. What is your perspective on this area?

So, as you notice, I call it menopause hormone therapy and not hormone replacement therapy. Because we're not trying to replace hormones. We can't do that. Our body, is naturally unwinding. It's a natural part of aging. And we have changes more than just hormones dropping. Like I said, we have changes in our gut microbiome. We have changes in our receptors. We have changes in our sensitivity to hormones. So when people are like, I'm going to go on hormone therapy because I want to stop all of these changes. It doesn't happen. You still have to put in the work. The only thing that menopause hormone therapy has been vetted to do is stop hot flashes and help a bone health.

It doesn't stop visceral fat gain. It doesn't stop changes in our lipid and our blood glucose. It'll slow the rate of change, but it doesn't stop it. When I talk about hormone replacement therapy, that is more when we think about thyroid, we think about all the other hormones that actually need to be replaced because you're deficient. perimenopause is not a female hormone deficiency syndrome it's not a deficiency in hormones that need to be replaced

that's why it's menopause hormone therapy because it's a tool in the toolbox and there are some women who really do suffer significantly from the effects of losing their estrogen progesterone so we have rage we have mood changes we have poor sleep we have significant metabolic distress we have significant bone loss, and we see that using menopause hormone therapy in conjunction to lifestyle is a win, but it's not for everyone. Not everybody needs to go on it. And that's where I get frustrated in what's being projected in social media and in popular media that every woman needs to be on it. Because the longevity hasn't been shown in this, and not everybody suffers from the same thing. So we have to individualize it. I'm not saying no one should be on it,

but I'm also not saying that you shouldn't be on it. I'm saying that it's a tool. Yeah. People should make that choice, have that conversation, and it's a very effective tool, but you do also have to put in lifestyle changes to get the benefits to keep progressing well. Yeah. I agree. And just to follow on from that, I'm not against it. I think for some women, it's game changing, okay? But it has to have. to be individualized. We have to look at it in the context of everything else. And what I found with many, many patients in the past is that they have symptoms that are related to these changes in their hormones. But if you can and are able to pay attention to those four pillars of health,

particularly I found when we can really help reduce stress levels in women for a variety different reasons, you will often find, not always, but often, that a lot of their symptoms actually go away, right? Because they're downstream from all of these other physiological changes. And if you can address them with lifestyle, and again, some women can't, they're not able to, they don't have time to, or whatever it might be, but it's so much more nuanced than your hormones are going down, therefore you need to replace it with this therapy. Right. Exactly. There was a really interesting presentation in the international menopause meeting where they're looking at CBT or cognitive behavior therapy and mild hot flashes. And they found that CBT worked better at stopping mild hot flashes than menopause hormone therapy. I was like, that is telling because it goes right in with let's address the stress and change the behavior around it, which will then help the body just get.

below the level of triggering the hypothalamus and the serotonin to create this hot flesh. Yeah. You just said there that sometimes you get frustrated by some of the things you see in popular media or in the health space these days about various things to do with female health. And it's really interesting, Stacey, that when I listen to you talk, what comes across to me is someone who deeply cares, it's full of compassion, it's full of empathy and really just wants to help make the world a better place.

Thanks. Two or three weeks ago, you posted something very emotive on your Instagram accounts. I think it was a photo of you, looking a bit frazzled, and you basically said something to the effect of I'm knackered, I didn't sleep well,

feeling stressed out, and getting frustrated by all the bro-science that's out. There was something to that effect. What was interesting to me is that you posted something like that, and I think you deeply care, right? So I got a sense of, man, I keep putting out this information to the world, but I can't seem to stop this other information getting out there. So can you just talk to me a little bit about what was going on,

what was so frustrating for you, but also how all the love you received in the conversation, comments, which is so profound. I mean, the amount of people who commented to say, see, you've changed my life. You changed the life of all the women in my family or all the women in my practice or whatever it might be. Just talk to me a little bit about that post because I think it will give us an insight into who you actually are. Yeah, so there was a few weeks into a long trip. And because I live in New Zealand, and I I do a lot of stuff in the States.

I feel like I've spent more time away from my family in the Northern Hemisphere than I have here because I effectively have been gone since December. And I just got back this past Sunday. Wow. And that particular post, I had been blasted in social media by some rather larger voices, countering some of the fasting work that I put out talking about how women shouldn't be fasting and strength training, saying that women shouldn't lift heavy.

And they're coming from more of a strength conditioning world and not a physiological and metabolic world. And they're like, where are your references? Where are your references? And so they were on my page and they're demanding references and I'm giving them to them and they're creating a cascade of misinformation

on my own page. And I am having to constantly pull out references and there's a definite gender issue within social media where if a woman puts something out, it's always where are the references? I want the references. But if a man or a male influencer put something out, no one ever asks.

And I just get so frustrated sometimes where I'm like, why am I the one that is being hated on when I'm providing all of the science and I am providing all of the information. And I'm doing this and it's taking me away from my daughter, my husband, and my life. And all I want to do is get the information out. And I want women to be empowered and understand that they can take control of the situation,

that things aren't happening to them. They can push back and have the availability to control the situation and not feel like things are happening to them because they're not. Things are happening. But it's not to them. It's things are happening. And now you understand it. Let's do something about it. Let's grow this community and let's do something about it. Yeah. Well, thank you for sharing that. It must have been lovely. I'm sure to read all the comments that you got. It's very bolstering. Yeah, because you mean a lot to many people around the world. You've had a huge impact. And, you know, this lack of empathy that you're seeing there on social media. I know you've spoken about this recently. It's interesting that you're saying, as you travel the world, which you do regularly,

you've noticed this lack of empathy increase over the years, as I have. And I'm interested to know, what do you think is driving that? Well, I can see what's driving it from a cultural standpoint. You have the has and have not since becoming more and more divisive, and you're having political unrest, and there's so many things, and people are very isolated. because there is lack of community and it's just snowballing into all of these things.

Yeah, but I think there's many things that can contribute, but I think everything we've been talking about today in this podcast is absolutely relevant because when you feel better in yourself and your well-being and your brain and your hormonal profile is better, you're going to be more compassionate, you're going to be more empathetic, right?

So what we're talking about, yes, it's about hormones, But it's also about compassion. It's about if you treat your body in the way that we need to or can do as we get older, it's not only our body that's going to be better. Our mind is going to be better. The way we communicate with others is going to be better. You know, I have this realization in the last few months, actually, that although on the surface, it looks like I'm a medical doctor trying to share health information, yeah, that's true.

At the same time, I don't think what I'm doing is only about health. I think it's about creating a more compassionate world. Because health, why do we want better health? Well, I think we want better health because we've got more vibrancy, more energy. We're better with the people around us. And ultimately, we create a kind of more compassionate world, which is kind of the world I want my kids to inhabit as they get older. So I actually don't think what I do is about health.

It is. but in many ways it's more about compassion. Yep, I agree. I think that's exactly what it is. And the whole conversation around longevity, I look at it as like, do you want to live a long time being isolated and not so nice,

or do you want to be surrounded by friends and you're all doing Zimmerframe races and laughing? Yeah. Like, let's create a robust, happy community. Yeah. So, see, there was one thing, you said right at the start about common mistakes that women make. And one of the things you said was that they follow the traditional advice to eat less. And you're saying that women actually

perhaps should be eating more. Why did you say that? What is it that women need to understand about their food intake as they get older? We see as women get older, their appetite changes. in perimenopause, there's this incredible increase for craving of more simple carbohydrates because that's what happens when the brain is overstressed and tired, and we're starting to have a shift in metabolism. And in a cultural standpoint, women aren't supposed to want to eat. I mean, that's just how we go back to the 80s and 90s of the fat burning classes and the eat less and the images of really thin, thin women and that's starting to make a comeback now

with more and more microdosing of a Zimpec, which is scary. And when we talk to women about what they think is a normal calorie intake, especially active women, they're like, oh, well, I eat 15 to 1,800 calories a day. That is not enough. 2,000 calories for an active woman is not enough. And it's not just about the calories, it's about the quality of the food. So women who are looking to change body comp or lose weight, they default to the cultural norm of let's move more and eat less. But no one addresses, let's eat more of the quality food that is going to benefit our gut microbiome.

We have more protein that's going to benefit our muscles. And all of these are going to feed forward to the hypothalamus being happy and saying, yep, we have abundance so I can get rid of this extra fat. We have abundance. I can create more neurotransmitters. I can have my thyroid working properly. So we see this huge disconnect of energy availability, especially when women hit perimenopause, where they're trying to fight some of the cravings from a tired brain,

and they're also trying to fight body composition. And we've been so culturally ingrained to think that we need to eat less and move more. or in actuality, we need to feed our body and nourish it with really good high quality food and move. And that ends up being more calories than what a typical woman thinks is appropriate. Yeah, but on the face of it, Stacy, some women I think are going to hear that and go, yeah, but haven't we just said that there are hormonal changes that take place that are going to potentially increase the amount of fat I have on my body and specifically the belly fat I have, want to get rid of, many women are going to go, yeah, but in order to lose that, I do need to

eat less, because if I'm eating more, how am I going to lose that fat? But I guess that then highlights this lack of understanding of how our food intake impacts our hormones and how a lack of food intake for a woman potentially can increase levels of the stress hormone cortisol. all. Yes, and it changes how the hypothalamus responds with our appetite hormones. So if we're eating less and we don't have enough nutrient density, then the hypothalamus starts to wind down things and there becomes a misstep in our appetite hormones where we start to see a reduction in the ability to feel satiated in the food that we do eat. We see a change in leutinizing hormone pulse, which starts to flatten out, which has a

direct effect on appetite hormones. And we also see that when women don't eat as much as they should, that they move less incidentally and they crave more simple carbohydrates because the brain is like, hey, wait, what's going on? Hypothalamus is going, wait, there's not enough nutrition coming in. And then that feeds forward to storing more fat. Yeah. So when women are like, I have this extra fat, I need to lose.

It's not about reducing calorie intake. It's becoming more conscious of what we're eating, eating according to our circadian rhythm so that we maintain optimal pulse of our lutonizing hormone and our appetite hormones and our cortisol awakening response so that the hypothalamus works appropriately so that we can have the ability to alter our body composition in a positive way. Yeah, okay.

I love that. And that's something to definitely dive in to deeper in the future. If I could just finish off with one more thing I thought about early one in this conversation, and that's young girls or teenagers. You're making this case that actually the female is different from the male, and at various times in a female's life, things change. Puberty being one of them. Of course, men change in puberty as well,

but let's specifically talk about girls and women. I've got one daughter. I think you've got a daughter as well. What is it we should be thinking about with girls as they go through puberty and into their teenage years when it comes to movement that perhaps is relevant to those hormonal changes

that we've been talking about. Yeah, so one of the big things that happens is when we have these biomechanical changes with puberty. So, you know, like I said, the hips widen, so that puts more stress in the knee.

And we have differences in our center of gravity where we see a girl's center of gravity drops lower than a boy's. And a girl feels very uncomfortable in our total movement. So the biggest thing that we can do is re-teach fundamental movement.

We can work through functionality where we can improve strength through functional movement, where we're re-teaching how to run, how to throw, how to land, how to jump. Yes, maybe six months ago, the girls could do pull-ups on the monkey bar and now she can't.

We just have to say, well, you know what's happening? Is our center of gravity has changed? Your arms have gotten longer. It's harder to pull So let's work on that. Let's work on all these movements so that you feel better in your body

and you're able to move better because it's a short period of time where the body changes so much so rapidly. But no one addresses these fundamental movements in girls. And we see that this is one of the reasons where girls will start to drop out of sport is they don't feel like they can move as well. They feel sluggish.

They feel slow. They don't feel as coordinated. and then we start seeing brain changes that invoke more of this self-awareness where they feel like everyone is watching them. So if we can just encourage, all movement is great, but let's work on the strength through these particular natural movements

so that they know how to run well. They know how to land well. They know how to jump. They know how to pull. They know how to throw in the new biomechanics and the new body composition that's occurred. And is there an age where strength training is too young? Like, can a 12-year-old girl do strength training?

Can they lift weights? What is their consensus at the moment? Yeah, all strength training is good, but it's not about lifting heavy loads. It's about the functionality of movement. So maybe we're doing air squats, or maybe they're having a light kettlebell and then doing a goblet squat,

so it's a little bit more load, but they have to stay upright and have a right squat mechanics. So we're talking about strength training through puberty. We want to add load to increase the stress, but we want to make sure that all the mechanics of movement are proper under that load because we don't want to create strength in a poor motor pattern. We don't want to actually invoke those poor motor patterns.

We're trying to develop better motor patterns. And as we develop those, we can add load as long as we maintain those same motor patterns. Yeah, so broadly speaking, encourage our young girls and teenage girls to keep being active in as many different ways as possible. Yeah. Because there's a big thing, certainly in the UK, that once girls get to 12 or 13, physical activity seems to drop off massively. And I think that's a cultural thing that perhaps is happening in America and New Zealand as well. Yeah. Yeah, so how can we encourage? young girls to keep staying active through what I'm sure is a very challenging time.

Stacey, I've thoroughly loved talking to you. There's so many topics I wanted to discuss we didn't get around to, but I definitely think we met the goal of making the case why strength training and hit training is so important for women as they get older. For a woman who's listened to this conversation, Stacey, and feels inspired by what they've heard you talk about and feels like, yeah, you know what? That's it. I need to do something differently. I'm going to start making changes to address these hormonal changes, but they don't know where to start. What are your final words to them? First, find a friend, because I'm sure that you have a friend is going through the same thing

and have a conversation. And then you can look to either go in and get a personal trainer together, But if that's a bit too daunting, you can look at some of the apps that are out there. Like I said, Haley Happens Fitness, Loretta Loves Lifting, the Betty Rocker. Those are all really good and they all address different levels of fitness. One who just wants to stay at home would go with Betty Rocker. One who's really confident in the gym might go with Haley Happens Fitness. One who's just starting to explore strength training and wants to add some equipment might go with Loretta loves lifting.

but there are some really good apps that you can download and get into the communities there. Because again, when I talk about community, it's about having someone to lean into and ask questions, but also to support you. And when you start your strength training journey, it's good to have that. Yes, you're going to achieve personal goals and benefits,

but it's always more fun with community around you to encourage you to push a little bit more than what you really thought you could. Yeah, thank you. And of course, for you, for people who want to go deeper into the world of Stacey Sims, there's your book raw,

there's your Instagram. I notice you're more active on YouTube at the moment. But you also have some programs, don't you? What are these programs that you offer and how might women benefit from signing up? Yeah, we have some online courses. So we have a deep dive into menopause that goes through the history,

the changes, the physical activity, the nutrition, the case studies, all that kind of stuff. We have a next gen that's similar for girls going through puberty that's appropriate for the parents, the coaches, even the girls themselves, if they're around 15, because it's a little bit of an attention thing. Then we have micro-learning courses,

if you want to deep dive in protein or collagen or energy availability. So all of our courses are listed on our website. And then we have our newsletter that comes out twice a week that has a deep dive on some things as well. So if you just want to kind of capture everything that's going on, you can come to the website and have a peruse around and figure out where you want to go. Yeah, love it. Stacey, it's been such a joy talking to you. Keep on doing the great work, lifting people up, supporting them, empowering them, and spreading such helpful information. Thank you so much for coming on the show. Thanks for having me.

Really hope you enjoyed that conversation. Do think about one thing that you can take away and apply into your own life. And also have a think about one thing from this conversation that you can teach to somebody else. Remember when you teach someone, it not only helps them. It also helps you learn and retain the information. Now before you go, just wanted to let you know about Friday 5. It's my free weekly email containing five simple ideas to improve your health and happiness. In that email, I share exclusive insights that I do not share anywhere else, including health advice, how to manage your

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Making lifestyle change is always worth it because when you feel better, you live more. You know,