Friends in Beijing will be familiar with the scene of the old man hitting a tree in the park in the morning exercise. With the arrival of this craze, many young people have begun to join the team of hitting trees, thinking that this can keep fit. Traditional Chinese medicine believes that the back is yang and the abdomen is yin, and the yang meridians of the human body are all distributed in the back, among which the du meridian and the bladder meridian of the foot sun are particularly important. Du meridian is distributed in the middle of the back along the spine, and it is covered by Yang meridian. On the left and right sides of the Du meridian, the bladder meridian of Foot Sun also runs in parallel, and many points on the bladder meridian are the back Shu points of the chest and abdomen viscera, which can adjust the activity function of the viscera. Anatomy also shows that there are some autonomic ganglia regulating internal organs on both sides of dorsal spine. It can be seen that stimulating these meridian points on the back of the human body can play a role in regulating visceral function. Beating on the back of human body according to a certain rhythm can nourish yang, which is beneficial to the smooth flow of qi, the access of yin and yang, and the more coordinated function of viscera. Bumping and knocking on the back can lead the yang of the human body from the body to the body surface, so that the whole body is smooth in qi and blood, which is suitable for middle-aged and elderly people with poor qi and blood circulation. People who often work at their desks can not only bump their backs, but also pat their backs with rattan, lazy music and other tools, which can promote blood circulation in the back, relax back muscles, effectively relieve back muscle pain and play an auxiliary role in treating low back pain. Tip: Although it is recognized by experts, you must pay attention to it and have time when doing it.