Lack of exercise will make the average life expectancy negative. First of all, long-term inactivity leads to deficiency of qi and blood. If a person stays at home for a long time and does nothing, it will easily lead to lack of qi and blood and look sallow and emaciated. Secondly, if you don't exercise for a long time, it will lead to the decline of the body's immunity and reduce the regulation of various functions of the body. Over time, many life diseases will follow. Finally, long-term inactivity will lead to calcium deficiency in the human body. Medical research has proved that exercise is the most important factor to prevent calcium loss in human body. Longevity does not necessarily require exercise. You can do more exercise and exercise when you are young. After the age of 30, we should give priority to regular low-intensity exercise. You should pay attention to maintenance and don't have bad habits that are harmful to your health. Whether your body is strong or not has little to do with your life. Just as women are not as strong as men, the key to longevity is regular life and good habits.