Health preservation, as the name implies, is to maintain life, and it is an activity to enhance physical fitness, prevent diseases and prolong life through health care methods and means. It can also be said that it is prevention before illness.

Chinese medicine says that "Yang is nourished in spring and summer, and Yin is nourished in autumn and winter", which means that spring is the season when everything recovers and rivers thaw, and the weather begins to get warmer. At this time, the human body is most likely to get sick, because the weather has not warmed up, and it needs to be taken care of twice to avoid being hurt. In spring, you need to pay attention to nourishing the liver and let the yang grow smoothly.

Nourish yang in spring and summer and yin in autumn and winter.

Summer is when the sun is at its peak. Summer accelerates human metabolism, which is a period of excreting garbage and accumulating strength. Remember not to be too greedy.

Autumn is the harvest season. Spring and summer, autumn is the harvest time. In summer and spring, yang can't be raised well, and in autumn, diarrhea and chronic cough are easy.

In addition, autumn and winter is a period of yin and cold, and yang is restrained. At this time, you should let your body recuperate and maintain your qi, blood and body fluid.