Health preservation, also known as taking health, Shen Tao, nourishing nature, preserving health and prolonging life, etc. The so-called life is life, survival and growth; The so-called maintenance means maintenance, recuperation and nourishment. Health preservation is to maintain life. Life is divided into three periods, and health care is focused. The first stage: perfect health period (female 0-34 years old, male 0-39 years old). During this period, if most people get sick occasionally, it is easy to recover after treatment. The second stage: health care (female 35-65 years old, male 40-65 years old). This period is divided into: 1) disease-prone period: (female 35-4 1 year, male 40-47 years old. During this period, the burden of work and family is the heaviest. If you overdraw your health indefinitely, some chronic diseases and serious diseases will easily begin to form. 2) Critical period: (female 42-55 years old, male 48-60 years old. Under the double pressure of work and family for a long time, many early warning signals of the body are ignored, leading to the formation of diseases such as hypertension, cardiovascular and cerebrovascular diseases, diabetes and tumors. 3) Transition period: (female 56-65, male 6 1-65 years old) At this age, some physiological functions will rapidly decline or lose, and the body will undergo great changes. The third stage: the decline of physiological function (after 66 years old). Physical function is in the symptoms of gradual accelerated decline. Some people who have ruined or neglected their health before may get sick at this time. At this time, the focus of health care is 1) regular physical examination, even minor illnesses should be treated in time. 2) Listen to the guidance of experts, pay attention to every health care detail, and actively regulate the body. 3) Adjust your mood and stay optimistic.