First of all, it can enhance human metabolism. Physical exercise can promote the ability of tissue cells to absorb and utilize sugar, and increase the storage of liver glycogen and muscle glycogen. At the same time, because fat is a rich energy substance in human body, the energy released by its oxidative decomposition in the body is about twice that of the same amount of sugar or protein. Long-term physical exercise can also improve the body's ability to use fat.

Second, for the sports system, insisting on physical exercise can produce good effects on bones, muscles, joints and ligaments. It can maintain the normal tension of muscles, promote the storage of calcium in bones, prevent osteoporosis and make joints have good flexibility.

Thirdly, for the cardiovascular system, regular exercise can slow down the heart rate at rest and during exercise, reduce the working time of the heart and increase the function of the heart. Regular physical exercise, especially stretching and chest expansion, can strengthen the strength of respiratory muscles, and chest expansion is conducive to the growth and development of lung tissue and lung expansion, thus increasing vital capacity.

Fourth, exercise accelerates the consumption of energy in the body, and energy is finally obtained through food, which will promote the improvement of digestive function after exercise.