Exercise can promote health, but athletes are often unhealthy and live longer. They have many injuries when they retire, and their average life expectancy is generally less than that of normal people 10 years. Athletes have made great sacrifices for honor, including health, which we deeply respect. At every Olympic Games, China athletes compete for gold and silver medals and sing victory songs. But we have to think about a question, why do athletes have short lives?

First of all, the process of human life is also an oxidation process. We can't live without oxygen, which can accelerate the aging and quality control of the body. Athletes need a lot of oxygen because of overload activities, which also accelerates the consumption of organs. In addition, due to the high activity and strong oxidation reaction ability of free radicals, they can attack any molecules they meet through oxidation, so that the macromolecules in the body undergo peroxide denaturation, crosslinking or breakage, thus causing the destruction of cell structure and function, leading to tissue damage and organ degradation.

Secondly, sports are so competitive that high-intensity training for medals and rankings does not conform to the principle of health care and will seriously damage human health. Hua Tuo, a famous doctor in ancient China, said: If you want to work, you can't use your ear. If you shake it, the valley qi will be removed, and the blood will be carried out, and the disease will not be born. For example, the household pivot is immortal. In other words, life lies in exercise, but improper exercise will damage the body. Exercise can promote food digestion, blood circulation is smooth, and people will not get sick. For example, the door shaft keeps moving and will not rot. But excessive exercise is counterproductive.

Thirdly, athletes have great psychological pressure during the competition. Strong mental stimulation will awaken the sympathetic nervous system and lead to the increase of catecholamine in the blood, which will not only make the body adapt to the urgent physiological changes, but also make the neuroendocrine function of hypothalamus-pituitary-adrenal cortex hyperactive and make the potential in the body fight against the pathogenic factors. However, excessive stress will damage the body itself, cause various adaptive diseases, and even lead to diseases.

Modern people have two extremes in sports. One is inappropriate exercise. Many athletes don't live long because of too much exercise intensity. Second, they don't exercise. Many white-collar workers and social elites have no time to exercise. They eat too much food, which makes them overweight and prone to various diseases, such as high blood pressure, heart disease and even cancer. China people's health is a combination of activity and quietness, such as meditation and meditation. Exercise should also be moderate, mainly aerobic exercise such as walking and jogging, and don't do too much anaerobic exercise.