Fitness will not make you live longer, but it will make you healthy and live a better life. But it is very important that not all sports are good for human health. Sometimes strenuous exercise often destroys the physiological balance inside and outside the human body, accelerates the wear and tear of some organs and the imbalance of some physiological functions, leading to the shortening of people's life process, premature aging and early death, especially for girls, some of my female friends have irregular menstruation. Therefore, if you want to achieve the purpose of health care through exercise, the key lies in mastering a "degree". There is a scientific basis for "moderate" reasonable exercise, and the methods of "regular exercise" and "appropriate exercise" can be adopted. At the same time, if the average person reaches or exceeds the upper limit, it is necessary to reduce the amount of exercise. Such moderate exercise, combined with static and dynamic, can achieve the purpose of strengthening the body.