長文読解（人文系・自然科学系の文章）- 問題25

The concept of "forest bathing," known as shinrin-yoku in Japanese, has gained international recognition as a therapeutic practice. Originally developed in Japan during the 1980s, this practice involves immersing oneself mindfully in a forest environment to reduce stress and improve overall well-being.
Scientific research has demonstrated that spending time in forests can significantly lower cortisol levels, reduce blood pressure, and boost immune system function. A study conducted by Dr. Qing Li at Nippon Medical School found that participants who engaged in forest bathing showed a 50% increase in natural killer cell activity, which helps fight infections and cancer.
Unlike hiking or other vigorous outdoor activities, forest bathing emphasizes slow, contemplative movement and sensory awareness. Practitioners are encouraged to breathe deeply, touch tree bark, listen to bird songs, and observe the play of light through leaves. This mindful approach helps activate the parasympathetic nervous system, promoting relaxation and healing.
Today, forest bathing programs are being implemented in hospitals, schools, and wellness centers worldwide, offering a natural complement to traditional medical treatments and stress management techniques.