Chinese medicine believes that the back of the human body is yang and the abdomen is yin. The back is the main part of the human body, running through the upper and lower important meridians. Everything germinates in spring, which is the easiest way to excrete cold and damp toxins accumulated in the body in winter. At this time, back massage is carried out, and exercise makes the qi and blood on the back run smoothly, so that people's spirit will be abundant and qi will be discharged. The spirit will rise in spring and all the year round. Therefore, the ancients said that "spring returns to the earth, and you don't feel tired all year round."

The back is the gathering place of all nerves in the human body and the distribution center of main acupoints, so the maintenance of the back is very important. If the back is wet and cold for a long time, there will be diseases such as low back pain and ankylosing spondylitis. In spring, moxibustion is often used at Shen Zhu, Yaoyangguan, Zusanli and Yanglingquan. Insisting on proper back function exercise, such as flying swallow and arch bridge, can enhance the muscle strength of the back of the drug and prevent low back pain. It's good for waist maintenance.

Training includes many meanings, such as training amount, training intensity, training methods, training movements and so on. Flexibility training is also practice, so you don't have to practice anything every day. Especially for the flexibility training of the back, daily exercises can relieve fatigue, relax the waist, prevent and reduce the strain of the waist muscles, and open the shoulders to prevent kyphosis of the thoracic spine (the waist stops at the flange on the humerus, which is strong and lacks flexibility, and can force the latissimus dorsi to turn its big arm inward, leading to the rounding of the shoulders and chest, which will form a hunchback over time). If the training does not reach a certain intensity, any muscle can be used every day. If the training reaches a certain intensity and leads to fatigue in the training area, you can't practice every day. Let the muscles rest and relax. It is normal for the same muscle to train at least 48 hours apart, while the waist muscles should be trained at a longer interval, that is, 72 hours.

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