In autumn, although there is no heat to disturb the mind, people are prone to feelings of sadness, commonly known as "sad autumn". Modern medical research has shown that the shorter sunshine time in autumn leads to an increase in melatonin secretion by the human body, which inhibits the secretion of thyroxine and adrenaline, making it easy for people to feel depressed. A study has found that exercise can induce positive thinking and emotions, which have a resistance effect on negative moods such as depression and anxiety. "Miao Yun, deputy chief physician of the Rehabilitation Medicine Department of Shanghai First People's Hospital, introduced in an interview with People's Daily that appropriate exercise can increase the body's oxygen intake, which is beneficial for emotional control. Mountaineering is a good way to exercise in autumn. It is beneficial for both physical and mental relaxation, not only for appreciating the beauty of autumn, but also for broadening the mind and promoting the health of the climber's nervous, cardiovascular, respiratory, and musculoskeletal systems. "Miao Yun said that during mountaineering, as the height rises within a certain range, The abundance of hydrogen ions and negative oxygen ions known as "air vitamins" in the atmosphere of mountainous areas with abundant vegetation is increasing, making it feel like a "forest bath". Mountain climbing, combined with a slight decrease in air pressure, can promote a series of adaptive adjustments in human physiological functions, increasing lung ventilation and vital capacity, accelerating blood circulation, and increasing cerebral blood flow. In addition, jogging is also an ideal autumn sports event. Jogging not only enhances blood circulation and improves heart function, but also improves the blood supply to the brain and oxygen supply to brain cells, reduces cerebral arteriosclerosis, and enables the brain to work more efficiently. Jogging is not only beneficial for physical health, but also for mental health. Running can increase the secretion of endorphins in the body, alleviate anxiety and tension, and make people feel happier. Improper exercise in autumn can also harm the body, "Miao Yun suggested. When the temperature is low in autumn, the body will reflexively experience vasoconstriction, decreased flexibility, and reduced range of joint activity. Therefore, before exercising, it is necessary to fully prepare for activities to prevent joint ligament damage, muscle strain, and avoid rapid increase in heart rate. The time and content of preparation activities should be based on a slight fever in the body. In addition, if the temperature is low in the early morning of autumn, clothes should be added or subtracted according to the changes in outdoor temperature. After exercising, avoid wearing sweaty clothes and staying in the cold wind to prevent catching cold. (Yan Yan, Chen Ziyuan)