Forest therapy:
nature as a source of strength

Forest therapy is a guided nature experience that goes well beyond an ordinary walk in the woods. Led by trained therapists, participants take in the forest with all their senses: they listen to the rustle of leaves, feel bark and moss beneath their hands, and breathe the fresh air deeply. A key element are substances known as phytoncides: volatile compounds that trees release to defend themselves against pests. Research by the Japanese immunologist Qing Li has shown that these substances increase the activity of natural killer cells in the human immune system. On top of this comes the sensory slowing-down: the unhurried pace, the stillness, and the shades of green have a measurable calming effect on the autonomic nervous system.

Studies show that as little as two hours of forest therapy can lower cortisol levelsand blood pressure while improving heart-rate variability – a sign of a well-rested nervous system. Immune activity has been shown to remain elevated for up to 30 days after a single session. On a psychological level, forest therapy lifts mood, reduces rumination, and strengthens the ability to concentrate. Regular practice also fosters a deeper sense of connection with nature, which helps to stabilise overall wellbeing in the long term and makes a valuable addition to modern wellness programmes.