Stretching helps to move the muscles and bones and promote blood circulation. There is an old saying that “stretching an inch extends your life by ten years”, which shows that stretching also has the effect of increasing your life expectancy, but the effect is slow and requires long-term persistence to have an effect. At the same time, after strenuous activity, there is a role of acid drainage, and the main body movement of the joints have a protective effect. It should be noted that before stretching to warm-up activities, such as jogging or brisk walking, and then stretching. Do not stretch too strongly at first, it is easy to cause muscle strain and may lead to soft tissue injury. Therefore, stretching also needs to be gradual and persistent in order to have an effect.