Why does tourism play such a big role in the rehabilitation of mental illness?

Many mental illnesses are caused by stress, and tourism can just play a relaxing role. Tourism can cultivate sentiment, enjoy the beautiful scenery, birds and flowers in scenic spots, not only see the magnificent scenery of great rivers and mountains, but also stretch your feelings, make people relaxed and open-minded, and cultivate sentiment in aesthetics. Relaxation of mentality and spirit will exert a subtle regulatory effect on blood pressure and blood sugar, alleviate some chronic diseases, and be beneficial to physical and mental recuperation.