Forest bathing: how to do it, and what the science actually says

The path is still wet from last night's rain. The leaves underfoot no longer crunch, they give, and a smell rises from them, earthy and faintly sweet. Overhead, the colours have turned in a matter of weeks: russet, ochre, yellows that look lit from inside.

Your body tends to notice this before your mind does. The shoulders drop a little, the breath lengthens without being asked. Here is the one sentence answer: forest bathing, or shinrin-yoku, means walking slowly among trees and opening your senses one at a time; research links it with lower cortisol in the short term, and an ordinary park is enough to begin.

What to do, step by step

No kit, no performance. Forest bathing happens at the pace of an aimless stroll, and each step can take as long as it needs.

What is forest bathing, exactly?

Shinrin-yoku is a Japanese term usually translated as forest bathing. The image is a good one: you do not cross the forest, you immerse yourself in it, the way you would lower yourself into water at the right temperature. Forest bathing is not a hike: there is no distance, no climb and no goal, only attention given to a place.

The difference matters more than it sounds. When you walk to get somewhere, your attention runs ahead of you, into the rest of the day. When you walk to feel, it comes back into the body: the soles of your feet, cool air on your face, the rhythm of your breath. That shift, from thoughts to sensations, is what forest bathing cultivates.

It is also the spirit of sophrology, which starts with the body and the senses so that the mind can settle by itself, instead of being told to be quiet.

What does the science say about forest bathing?

A systematic review and meta-analysis in the International Journal of Biometeorology (2019) screened 971 articles, kept 22 for the review and 8 for the meta-analysis. Salivary cortisol, a hormone associated with stress, was significantly lower in forest groups than in urban groups.

The authors are careful, and that care is what makes their work useful. The effect was short term. They also point out that anticipated placebo effects, the plain act of looking forward to something calming, can play an important role, and they call for more research.

A second systematic review and meta-analysis, in Environmental Research (2018), widened the lens to greenspace in general. Drawing on 103 observational and 40 interventional studies covering around 100 health outcomes, it associated greater greenspace exposure with lower salivary cortisol, lower heart rate and lower diastolic blood pressure, among other outcomes. These are associations: they do not show that greenspace itself is the cause.

Do you need a real forest?

No. The second review covers greenspace broadly, not only ancient woodland. A local park, a garden square or a row of plane trees on the way to work already offers colours, sounds and smells your body can take in.

Autumn is a generous season to start. The leaves change week by week, wet ground gives off a stronger smell, and the low sun picks out every trunk. Everything invites a closer look, provided you slow down enough to notice.

As for the expectation effect the researchers flag, it is not the disappointment it might seem. If looking forward to calm already helps the body prepare for it, then choosing the moment, protecting it and going with some appetite is part of the practice, not a flaw in it. There is a quiet joke in this: you cannot hurry your way into slowness, but you can make an appointment with it. For the same slow breath at home, the breathing timer offers gentle rhythms to follow.

What this does not replace

Forest bathing is a way of looking after yourself, not a treatment. The studies above describe a short-term effect or associations, and they promise nothing for any one person. If stress or anxiety lasts, disturbs your sleep or fills your days, talk to your GP.

On days when the woods are far away, or the rain is too heavy, your breath is still there. In Soa, a calm voice guides the breath and then the body, with nothing to memorise. The Less Anxiety, More You programme offers guided breathing and relaxation for moments when worries take up too much space, so you can explore body awareness and imagery at your own pace, alongside professional support when needed.