The amount of daily exercise depends on the individual’s physical fitness and physical state, and should be based on their own circumstances. Exercise is good for health, but unreasonable exercise may also cause damage to the body. For the general population, 1-2 hours of exercise per day is appropriate. If you are a good athlete, or often exercise people, if the amount of exercise is too small, not to exercise, control body shape, improve physical fitness purposes, if the amount of exercise will lead to muscle strains, muscle strain, etc., and may even occur acute injury to the motor system. It is recommended that such people develop exercise plans according to their own physical fitness, and appropriately increase the intensity of exercise in order to achieve the best exercise effect. In addition, before exercise should do a full warm-up, wearing comfortable sportswear and sports shoes to avoid sports injuries.