This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
Shinrin-yoku did not begin as a spiritual discipline or a folk custom but as a piece of public health policy. In 1982, Japan's Ministry of Agriculture, Forestry and Fisheries launched it as a national campaign, coining the term to encourage citizens to spend time in the country's extensively forested land for the sake of stress relief, at a moment when Japan's postwar economic growth had left urban working life increasingly demanding. The word was chosen deliberately: a bath taken not in water but in a forest's atmosphere, sight, sound, smell, and it named an intention rather than a fixed technique, unhurried, unstructured time spent attentively in forest surroundings, without laps to walk or postures to hold.
The campaign might have stayed a domestic public health initiative had researchers not taken it up as a subject of study. From the early 2000s, Japanese physiologists, most prominently Qing Li at Nippon Medical School, began running clinical studies on what time in forest settings actually did to the body, publishing findings on stress hormones and immune markers through the 2000s and 2010s. Their research, and Li's own popular writing built on it, carried the practice out of Japan and into Western wellness, healthcare and ecotherapy programming during the 2010s, arriving in English as "forest bathing," a policy born of one country's public health planning becoming an international practice within a single generation.