A team of scientists in Japan conducted an experiment with hundreds of people around the country. They asked half of the participants to walk for fifteen minutes through a forest, and the other half to walk through an urban setting, and then they tested their emotional states. In every case, the forest walkers experienced significant mood improvements when compared to the urban walkers, plus a decline in tension, anxiety, anger, hostility, depression and fatigue.21 The benefits were immediate and effective.
