Many people think that no heat and no pain, able to eat and sleep, able to work and walk is no disease, is really healthy, is this really so? Let’s look at some thought-provoking figures: Zhou Yu died at the age of 34 due to jealousy during the Three Kingdoms period, Confucius Ming died at the age of 54 due to his faithful support and daily exertion, and a large number of talents left the earth prematurely in their prime years; is it really that God is jealous of talents? And with a healthy and strong body of volleyball players Hyman, sprinters Qiao Yi Na and China’s bodybuilding star Ma Hua’s death, have to make people shocked and thoughtful. The phenomenon of premature death at an early age is actually the “overworked death” proposed by Japan more than a decade ago, which is related to the rapid development of modern science and technology, a sharp increase in the amount of social information, increasing workload, accelerating the pace of life and psychological overload and other factors. Many people always think they are physically fit and energetic, but in fact, after the age of 25, the degeneration of several systems begins, including the degeneration of bones, intervertebral discs of the spine, skin, muscles and hearing, and the thymus, one of the main immune organs of the human body, begins to atrophy after puberty, and its function also decreases; after the age of 35, the rate of decreasing function of various organs gradually accelerates, so the Japanese Therefore, Japanese scientist Kunio Ota summarizes that before the age of 20 is the growth period, after the age of 20, aging begins, and after the age of 30, all organs and functions begin to age. Health is the first state, sickness is the second state, and there is a third state between the two – subhealth state. Some studies show that about 20% of the world’s population is in the first and second state, while about 60% of the population is in subhealth state. The main symptoms of subhealth state are: loss of appetite, restlessness, headache and dizziness, fatigue and weakness, depression, insomnia and forgetfulness, depression and irritability and dry skin. A variety of factors can cause subhealth states, which involve social, environmental, climatic, biological, nutritional, psychological, lifestyle and behavioral aspects. Specifically, poor living habits such as smoking, alcoholism, inappropriate work and rest, poor diet or partial diet, pollution from water, environment, air and agricultural products, as well as physical, chemical, biological and psychological factors in modern life can endanger health and lead to subhealth state; it can exist intermittently or continuously for several months, years or even decades in a person’s life, and if not corrected in time, it will lead to In addition, during certain stages of life, such as prenatal period, postnatal period and menopause, suboptimal health can also occur. However, with the rapid development of modern science and technology, especially the development of biomedical theory and technology, in some developed and developing countries, infectious and parasitic diseases are no longer a threat to human life and health. and parasitic diseases are no longer the main diseases that endanger people’s health, but the bad lifestyle diseases caused by bad habits and behaviors, such as cerebrovascular disease, hyperlipidemia, cancer, cardiovascular disease, obesity and diabetes and other non-communicable diseases, has become the main disease that threatens human beings, in China, various causes of death, caused by bad lifestyle accounted for 44.7%, the first; in the United States, the proportion In the United States, the proportion is as high as 50%, and these bad habits and behaviors include smoking, alcoholism, improper diet, lack of physical activity, mental imbalance and mental disorders. Therefore, after the second world health revolution in the 1940s, WHO proposed a new definition of health in 1948: health is a state of physical, mental and social (adaptation) perfection, not just the absence of disease and infirmity. In other words, this definition extended the content of health to the physical, mental and social spheres of human activity. In short, the new concept of health should be the possession of a healthy body, a good mental state and good social adaptability, none of which can be considered healthy.