THE LIBRARY
What the research keeps saying.
The research is clear. Time in the forest changes the body and the mind in measurable ways. This page gathers the studies, books, and voices we return to most often. Some are peer-reviewed science. Some are the kind of book you press into a friend's hands without explaining why. All of them deepen the conversation that begins on a walk.
RESEARCH
Stress and the body
The forest changes the body
Dr. Qing Li's review draws together nearly two decades of controlled studies by his research team. Forest bathing increased NK cell activity, reduced cortisol and adrenaline, lowered blood pressure, and improved cardiovascular markers. Many of these effects lasted days or weeks after a single visit. The paper establishes Forest Medicine as a new field of preventive science.
Blood pressure an pulse rate fall within minutes of entering a forest
The largest field study measured 280 people across 24 forests in Japan. Forest setting produced lower cortisol, lower blood pressure, slower pulse, and greater parasympathetic nerve activity than city environments.
Two days in a forest changed how the body handles stress
Researchers measured stressed adults before and after forest immersion, then ran them through a mental stress test. Cortisol dropped, heart rate variability increased, and the parasympathetic nervous system stayed elevated even under pressure. The forest shifted how their bodies responded to stress afterward.
BOOKS
Recommended reading
Nature and the Mind
Marc G. Berman, PhD
The founder of environmental neuroscience makes the case that nature isn't an amenity but a necessity. Rigorous, readable, and grounded in the same research that shapes our practice.
Braiding Sweetgrass
Robin Wall Kimmerer
Part science, part story, part prayer. Kimmerer braids Indigenous wisdom and botanical knowledge into something that reads like a conversation with the land itself.
Forest Bathing
Dr. Qing Li
The foundational text on the science of shinrin-yoku, from the researcher whose immune function studies changed the field. Accessible, practical, and filled with photographs from forests around the world.
The Nature Fix
Florence Williams
A journalist follows the science across three continents, from forest trails in Korea to green prescriptions in Scotland. The best introduction to why this work matters, written with wit and rigor.
VIDEOS
Worth watching
How Trees Talk to Each Other
Suzanne Simard
Years of research in Canadian forests led to an extraordinary discovery: trees communicate through underground networks, sharing resources and warnings across vast distances. This talk will change how you walk among trees.
Forest Bathing: The Healing Nature of Nature
PBS More Local Stories
A PBS documentary that follows real participants through a guided forest bathing experience. Covers the science of phytoncides, cortisol, and immune function while showing what the practice actually looks and feels like.
Making Spaces of Awe and Restoration
Florence Williams
The author of The Nature Fix explores how cities around the world are designing nature back into daily life. From healing forests in Korea to low-tide walks in Seattle, Williams makes the case that access to nature is a public health priority.
Reclaiming the Honorable Harvest
Robin Wall Kimmerer
The author of Braiding Sweetgrass speaks about reciprocity with the living world. What does it mean to take only what is given, to give back in return? This is the philosophical ground our practice stands on.
EXPLORE
Go deeper
Why Everyone Should Try Forest Bathing
Dana Covit
A writer arrives skeptical and leaves murmuring hello to a tree. This first-person account captures what the research numbers can't: what it actually feels like to slow down and pay attention.
Can forest therapy enhance health and well-being?
Susan Abookire, BSEE, MD, MPH, FACP
Harvard's evidence-based overview of forest therapy research, written for a general audience. The article to share with someone who needs the science before they'll try the walk.
A Splendor Wild and Terrifying
Mark Phillips
A writer gets lost in the Adirondacks and finds himself between awe and vulnerability. This essay isn't about forest bathing. It's about what happens when you stop performing your relationship with nature and actually enter it.
Cultivating Wonder
To the Best of Our Knowledge
An NPR episode exploring how wonder works, why it matters, and what happens when we make room for it. Not about forest bathing, but about the state of mind forest bathing opens.
"My friend dragged me to this. I spent the first ten minutes thinking about my to-do list. By the end I was sitting on a log talking to a group of strangers about what the moss smelled like. I’ve already booked my next guided walk."
— PREETHI V., BOTHELL
