According to the statistics of 6,000 deceased athletes by an insurance company, the average life expectancy of athletes is only 50 years old, most of which is caused by excessive exercise.
A study of about 2,300 athletes who participated in the 1998 Los Angeles Marathon found that the number of athletes who got sick after the race was about 1.4%, nearly five times higher than those who had been trained but did not participate. The study also found that athletes who train more than 1 km per week are more likely to get sick than runners who train less than 32 km per week.
Ken Cooper, a French bodybuilder who invented the aerobic fitness method, said that if the exercise exceeds the limit of "diminishing returns" for a period of time, the human immune system will be damaged and lose its ability to resist various infectious and non-infectious diseases. Experiments show that exercise accelerates the metabolism of the body, makes the oxygen consumption in the body increase sharply, and produces a lot of "active oxygen", which makes people easy to age.
Recently, studies by physiologists in Germany and the United States have also found that excessive or excessive exercise makes the blood supply and oxygen supply of various organs in the body lose balance, leading to premature aging of the brain, disrupting the endocrine system and damaging the immune mechanism. Life lies in exercise, but no matter what kind of exercise, enough is enough. Too much and too intense will undoubtedly do great harm to the body, especially for professional athletes and people who need to keep the same posture for a long time. Combine work and rest. Only proper exercise can make the body healthy, and the balance of exercise components can not be inaccurate, otherwise the advantages will not be seen and the disadvantages will appear first.