The first layer is physiological health care, and ancient health care pays attention to four ways: moderate exercise can move bones and muscles to dredge qi and blood; Second, the way to rest properly can reduce consumption and keep fit; Third, the way of food and nutrition is that balanced nutrition can make the diet smooth; Fourth, the way to maintain life is to be cheerful and emotionally stable. If we can "not act rashly", be cautious about sexual intercourse, abstain from prostitution, avoid external evils, emphasize internal adjustment, supplemented by necessary self-care and drug treatment, we can live a long and healthy life. However, in today's view, simple physical health care can be said to be shallow health care.

The second layer is mental health, that is, regulating emotions and cultivating self-cultivation, because emotional activities and moral cultivation have a great relationship with physical and mental health.

The so-called "emotion" refers to the "seven emotions" mentioned by Chinese medicine, namely "happiness, anger, worry, thinking, sadness, fear and surprise". The seven mental factors are caused by various stimuli from the external environment, both physical and psychological. Normally, they will not cause diseases, but if they are too intense or persistent or too sensitive, they will lead to diseases such as joy, sadness, spleen, anger, liver, sadness, lung and kidney. Therefore, the most important thing is to pay attention to regulating emotions. The internal cause of health care is that six evils (wind, cold, heat, dampness, dryness and fire) can be used by inorganic evils to make the body harmonious inside and outside.

The so-called "virtue" is moral behavior. Confucius said that "the benevolent lives long" and "great virtue leads to his life"; Xun said: "If you have virtue, you will be happy" and "If you are happy, you will be happy for a long time"; Sun Simiao, a great physician in the Tang Dynasty, wrote in A Thousand Women: "Virtue can't take the Jade Liquid Pill for a long time" and "virtue and Japan are not good enough to live longer". Therefore, emotional Xiu De is the biggest method of keeping in good health, which can be said to be deep-seated keeping in good health.

The third layer is philosophical health preservation. The so-called "philosophical health care" is mainly to master the law of unity of opposites and the viewpoint of dichotomy. Wang Fuzhi, a famous thinker and philosopher in the late Ming and early Qing dynasties, has the same idea of "six natures" and "four views".