Yang Qi, Chinese medicine generally refers to human kinetic energy activities. Traditional Chinese medicine believes that yang is external defense and external defense is solid. That is to say, yang has a protective effect on human body, which can make people healthy and strong, enhance their resistance and avoid the invasion of six evils in nature.
Why should people pay attention to maintaining the yang in the body in summer? Summer is a season of strong yang.
Su Wen's Theory of Four Seasons Tune the Spirit says: People who are yin and yang at four seasons are the root of all things, so saints raise yang in spring and summer, and yin in autumn and winter, so as to follow their roots and go against them, they will break their roots and destroy their truth.
At the turn of spring and summer, hair grows vigorously, and its nature belongs to yang. Autumn and winter are characterized by calm and stagnation, and their nature is yin. Yin and Yang are the unity of contradictions, with four seasons alternating and cold and summer alternating, which is a reflection of the growth and decline of Yin and Yang and the mutual root of Yin and Yang.
Zhang Jingyue, a famous doctor in Ming Dynasty, said: Yin Fu originated from Yang, Yang originated from Yin, Yin originated from Yang, and Yang was longer than Yin. Therefore, saints raise yang in spring and summer, thinking that autumn and winter are the land, so they all follow their roots. Zhang Jingyue said that in summer, if you want to keep healthy by diet, you should be good at mastering the qi, blood, yin and yang of the human body, and match different diets according to specific conditions.