Life Kit - Why spending time in the woods makes you feel calm
Episode Date: April 22, 2025Decades of research have shown that "forest bathing" is good for your health. It can boost your immune system, lower blood pressure and help with depression. Here's how to reap these benefits on your ...next walk in the woods. This episode originally published August 24, 2023.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy
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Listen to the Consider This Podcast from NPR. You're listening to Life Kit from NPR. Hey, everybody. It's Marielle. Isn't the forest
a magical place? Like when you really venture into the woods and you see these century-old
trees towering over you, sunlight twinkling through them, and spiders weaving
their elaborate webs. The smell of pine needles is in the air. Birds are tweeting. You hear
a mysterious sound that you're not going to pay too much attention to, but you really
hope is not a bear. There is a moment of awe that happens when you step into a forest.
And I think a lot of us can sense that forest bathing, or taking in the forest through your senses, makes us feel better and calmer.
I was surprised to learn that there are decades of scientific evidence backing that up.
A lot of the evidence comes from Japan, where the term forest bathing originated in the
1980s.
Over many years, researchers have shown in peer-reviewed studies that time in the forest is a kind of medicine. Forest bathing helps your immune system by
increasing your levels of anti-cancer proteins and immune cells that kill
tumors. It's been shown to lower blood pressure and stabilize blood sugar. It
can help with depression. It can lower adrenaline and turn down the dial on
your body's fight-or-flight response. What we could see in the data was that as soon as somebody came into proximity of a tree
and they were just present and mindful, paying attention and appreciating the tree,
that basically their parasympathetic activity, which is the relaxation response in the body,
was increased. I know, all of that from spending time with trees.
On this episode of Life Kit, we will talk about how to forest bathe, using the research
as our guide to what works.
And we'll share some exercises to get you started.
Feel free to head outside to listen to this one.
If like me, you're wondering why forests are so good for our health, there's an evolutionary
hypothesis for this.
Simply put, for much of human history, we lived in nature.
So the thinking is, because we evolved in nature, we have a biological need to connect
with nature.
So we love nature because we learn to love the things that have helped us survive.
That's Dr. Ching Lee, by the way.
He's a professor at Nippon Medical School in Tokyo and the president of the Japanese
Society of Forest Medicine.
He's designed and carried out a lot of Japan's research on forest bathing.
Another expert you'll hear from in this episode is Gary Evans, director of the Forest
Bathing Institute in the UK, which was heavily inspired by Dr. Lee's work.
Gary says at this point, we can survive without exposure to nature and forests specifically.
But there's a difference between surviving and thriving.
All right, let's get thriving.
We're going to start with some forest bathing basics.
Gary says a lot of the time when we head to the woods or a hiking trail, nature is a backdrop.
You know, it's secondary.
So we might be walking and talking with a friend, running, cycling, horse riding.
But he says if you want to get all the benefits of forest bathing, your primary focus should
be connecting with nature.
So takeaway one, really let yourself bathe in the forest.
It's kind of like bathing
in your tub. You're there to relax and dwell in the experience.
If you say, okay, I'm going to go to the park, I'm going to go to the forest, I'm
going to appreciate the natural beauty. So that's the first thing, set the intention.
Ideally, you can also set aside an entire morning or afternoon for this because...
The important thing for people listening to remember is that relaxation is not like an on-off switch.
As for how much time, Dr. Li suggests two to six hours.
The longer is the better. The longer is more effective.
His research shows that the health benefits can last for as long as 30 days.
So aim to do this once a month or maybe
more often if your sessions are short.
So you can build up the dose.
Now let's talk for a minute about location. A nice patch of forest or woods is best, but
if you don't have one nearby, you could get some of the same benefits from a city park
if it has a lot of trees and quiet spaces.
So if you travel one day to visit a city park, you also can get a beneficial effect.
But he says the effects will be smaller.
Lastly, before you enter the forest, do some basic wilderness prep.
This is not an exhaustive list, but that can include sunscreen, which you should be wearing every day anyway,
also bug spray and long pants to protect you from ticks and plants that will give you a rash. And check the weather ahead of time. Make sure it's
safe to venture out. Also, remember to stay on the marked trails and check yourself for
ticks after too, if those are a problem in your area.
All right, so we're into the woods. Next up, takeaway two, slow down and disconnect.
Your forest bathing session is a good time to sit or to walk
or to do some gentle yoga or Tai Chi.
It's not the time to squeeze in your hardcore cardio
for the week.
So the next difference between normal activities
and forest bathing is that we're gonna move very slowly
in forest bathing and we want to reduce the heart rate.
Also, Dr. Li says if you tire yourself out physically,
Your tightness will reduce the effect of heartbeat.
So when you get to the forest or the park,
maybe you walk a little bit,
and then find a spot that speaks to you.
Could be a clearing in the woods,
surrounded by a bunch of tall trees,
or a spot where a tree has grown into a curved shape
that looks suspiciously like a seat.
If it feels beautiful and resonant to you, that's what matters.
Now, sit down.
And then just be present with the environment and leave the phone alone.
Alright, you're settled in, your phone is turned off or at least put away.
It's time to engage your senses.
The sight, hear, taste, smell and touch.
We're going to start with smell and inhalation because Dr. Li says based on his research,
many of the benefits of forest bathing come when we inhale the chemicals that trees release into
the air. They're called phytoncides and when we breathe them in, they, on their own, can do things
like reduce our stress hormones and increase our levels of anti-cancer proteins. Dr. Lee has done experiments
on this. His team ordered these special concentrated essential oils made from Japanese cypress trees
and then pumped them into the hotel rooms of test subjects using a diffuser. The people staying in
those rooms saw many of the same health benefits as the ones who did a forest bathing session,
just to a lesser extent. So as a side note, if you can't make it to a forest, Dr. Lee says you could get some of the benefits by diffusing tree-based essential
oils at home. But yeah, takeaway three is to breathe it all in and ask yourself, what
do I smell? Behind each smell in the forest is an exquisite, wondrous fact. For instance,
the flowers on trees emit a fragrance
so they can attract bees with the promise of food
that's packed with energy.
According to researchers at the University of Tel Aviv,
a plant called the evening primrose
will actually pump up the concentration of sugar
in its nectar when bees are buzzing nearby.
I learned that from a book called
Forest Walkin', Discovering the Trees
in Woodlands of North America, written by Peter Wohlebine and translated by Jane
Billinghurst. I also learned that the earthy smell underfoot in the forest, the
one that makes you feel like, hell yeah I'm in nature, that comes from insects,
bacteria, and fungi breaking down leaves and rotten wood and that process will
enrich the soil with nutrients.
So the advice here? Notice what you smell, and maybe later follow your curiosity to learn
more.
You can also try some breathing exercises, because there's a big mindfulness component
to forest bathing. In addition to being a forest bathing researcher, Gary is a yoga
and mindfulness teacher, and he says the practice of meditation
started outdoors. Buddha had his awakening underneath a tree. No coincidence that the
trees were there right at the start of this. So here's an exercise to try as you're sitting
among the trees. So if you inhale for a count of one, two, and then you exhale for double the length of time. So it's one, two, three, four. And so you
keep that going, inhaling for two, exhaling for four. When the exhale is slower than the inhale,
it sends a physiological message to your body, I'm safe, I can relax, it's okay.
This breathing exercise has been shown to have benefits on its own outside of the forest
environment.
The reason to do it in the forest is to allow yourself to relax.
What happens on a physiological level is when our parasympathetic fires up and we slow down,
nature comes into sharper focus, so there's a change of perception.
And it gets easier to notice things, sounds, colors, textures.
And that's takeaway four, engage your other senses.
Listen for the rustling of chipmunks, the gurgling of a creek,
the groan of branches in the wind.
And notice the colors, bright red leaves exploding from trees,
light green ferns creating a canopy cover for the ground.
When you observe nature, that can slow down your fight
or flight response and lower the levels of stress
hormones in your body.
You can also take this moment to touch some stuff.
No, no, no, not the poison ivy.
You know what?
Why don't we start with the tree?
Go ahead and feel its bark.
Is it rough or smooth?
Does it have any scars from old branches?
Another sense you can use in the forest is taste.
I mean, you have to be careful. Don't just pick up a mushroom and start eating it.
But if you learn about plants and foraging, you can add that to your forest bathing practice.
You can also buy teas and tinctures from trained herbalists in your community and then bring them to the forest with you.
Lucretia Van Dyke is an herbalist, a ceremonialist, and author of the book African American Herbalism, a practical guide to healing plants and folk traditions.
I always laugh. I'm like at this point in my life
I'm so into herbalism that if you can't talk about plants, I don't really know what to talk about anymore.
One of her favorite trees is the mimosa tree.
It has these Dr. Seuss-like pink flowers on it.
Also herbalists use the flowers to help people work through grief.
So sometimes she'll take a couple drops of a mimosa tincture in her mouth.
And then I go sit with the plant and I hold the flowers and I'm like laying there with
the plant and staring at it, and all, it becomes
like this full circle thing.
That brings us to take away five.
Go deeper.
Work with the forest to process what you're going through.
Gary says you can see nature as a mirror.
So depending on what's happening in your emotional world,
quite often when we look at nature or the forest, it sends
something back to us to help us make sense of what's going on in our life.
The Forest Bathing Institute, which he runs, leads group trips to forests in the UK and
around the world, and people have told him that forest bathing helped them work through
grief.
Actually, a number of them that have come on our sessions have found that it's been very helpful to go into the forest
and see the natural cycle of life.
Somehow it's enabled them to reconcile what's happened.
In the forest, dead trees provide homes for woodpeckers and owls,
and when they fall down, they become hiding spots for frogs and other creatures,
and they provide a space for mushrooms and moss to grow.
In death, they support life.
Another metaphor, think about how trees communicate with each other through their network of roots
underground.
It's a stark contrast with how isolated many of us feel these days.
Lucretia shared this exercise.
So a beautiful practice I feel like is imagine how all these roots
are touching and watering each other and if we need to to like imagine you know even energetically
like my family lives in North Carolina and I'm in Louisiana so energetically like you know when I
imagine that tree and touching that tree, I can imagine myself and
my spirit being at home with them.
If you want to try something a little more spiritual, while you sit in the forest, ask
a tree or a plant to tell you about what medicine it holds.
You know, let me feel, you know, your medicine.
Let me understand your medicine.
Because that's a lot how the original people did it.
It's not like they had a book way, way, way back in the day
that told them, this plant does this, this plant does that.
And then you can always compare what you imagine to a book.
When you spend time in nature and around trees,
that can also be an opportunity to think about the folks who came before you,
whether that's deep in the forest or even in your neighborhood.
Lucretia told me about the Treme district of New Orleans, known for being among the
oldest African-American neighborhoods in the country.
And it has been, you know, cut in half by a highway and it's also been, you know, very gentrified.
She likes to look at the neighborhood's oak trees draped with Spanish moss and imagine
what have they seen?
I tried to imagine like the old Creole neighborhoods and how, you know, people of color came together
and watched each other's children and built what is now revered today as the birthplace
of jazz.
Like those trees have heard some of the original jazz greats ever.
She thinks of generations of kids playing and families sprawled out under the trees.
It puts me in old New Orleans and in those old community moments that don't exist or they exist in a new way.
I'm sensing a parallel here, right? Trees bring people together. We sit under them in
the shade and picnic. We gather around them and harvest their fruit. But they're in community
with each other too. The young and the old, propping each other up and sending each other
nutrients through their networks of roots. There's just so much wisdom that trees and plants hold for us when we pay attention.
All right, time for a recap. If you want a forest bathe, go to a place that has a lot of trees with
the intention of appreciating and focusing on nature. The trees shouldn't just be a backdrop
to some other activity. Go slowly. Take it easy.
This isn't about doing heavy cardio.
It's about slowing down your heart rate and getting to a calm place where you can start
to see the wisdom that nature offers.
You can also try some simple breathing exercises, slow yoga, or Tai Chi.
Or do meditation exercises that use the metaphors the forest provides.
On that note, Lucretia is going to walk us through one more forest meditation.
Settle down next to a tree and take some deep belly breaths.
I like for people to imagine your legs being like old tree trunk roots that root you deep
in the ground like the tree.
So when I take a deep breath, I imagine the energy from our
and love from our ancestors or from Mother Nature coming up those large roots
into your legs, into your abdomen, belly expanding.
And then as you exhale, sometimes I do a practice of
shedding the things that no longer serve me,
shaking off the day. And then she exhales and says a prayer of gratitude to Mother Nature.
This episode of Life Kit was produced by Claire Marie Schneider. Our visuals editor is Bec Harlan
and our digital editor is Malika Gareeb. Meghan Kane is our supervising editor, and Beth Donovan is our executive producer.
Our production team also includes Andy Tagel, Margaret Serino, Sam Yellowhorse Kessler, and Sylvie Douglas.
Engineering support comes from David Greenberg.
I'm Mariel Segarra. Thanks for listening.
Having news at your fingertips is great, but sometimes you need an escape. Thanks for listening.