"Nourishing Yang in spring and summer, nourishing Yin in autumn and winter", from Huangdi Neijing Su Wen Four Qi Tunes the Spirit, Gao Shizhen notes: "Sages nourish Yang in spring and summer, which makes Shaoyang angry and the sun angry; Nourishing Yin in autumn and winter will make the Taiyin qi gather and store less Yin qi. " It means nourishing yang in spring and summer to nourish the growth of yang; Nourishing yin in autumn and winter. This theory is of great significance in health care.

"Yin and Yang four seasons, the root of all things. Therefore, saints nourish yang in spring and summer and yin in autumn and winter to follow their roots, so they rise and fall with everything at the door of growth. If you violate its roots, you cut off its roots, which is really bad. Therefore, the four seasons of Yin and Yang are the end of all things and the foundation of life and death. On the contrary, it is a disaster. From it, it is unbearable, which is the way. " -the language "Su Wen Si Qi Tiao Shen"

Interpretation: Spring, summer, autumn and winter change in four seasons, with spring and summer as yang and autumn and winter as yin.

The qi of yin and yang rises and falls with the changes of the four seasons, which is also the fundamental reason for the growth, growth, collection and hiding of all things. Therefore, saints raise yang in spring and summer to meet the needs of growth, and raise yin in autumn and winter to meet the needs of collection function. By following the laws of natural changes in this way, they can naturally follow the rhythm of life movement like everything else.

Violation of this law will destroy the root of life and damage the true qi of the human body.

Therefore, the four seasons of Yin and Yang are the law of the origin and end of all things, and the source of life and death. If you violate the law of yin and yang in the four seasons, there will be disaster. If you follow this rule, you won't suffer from serious diseases, that is, you will have a way to keep fit. Wise people can act according to the rules, while ignorant people often run counter to them.