People with Yin deficiency physique are usually thin, afraid of heat, usually feel dry mouth, dry skin, hot hands and feet, easy to have night sweats, yellow urine, dry stools, flushed or reddish cheeks, red tongue, thin pulse, easy to get fire when eating hot and spicy food or staying up late: easy to have sore throat, sore mouth and tongue, easy to have insomnia, dreamy, also easy to be irritable and even lose temper. The hot summer climate of Lingnan directly or indirectly affects people’s physique, plus modern people live a stressful life, or even stay up all night, and love to eat spicy, fried food, so it is not uncommon for people with Yin deficiency physique. If you also have some of the above symptoms, you may also belong to a member of the Yin deficiency body. If left unattended, Yin deficiency can coexist with Qi deficiency, Blood deficiency, Yang deficiency, Yang hyperactivity, essence deficiency, fluid deficiency and dryness, or be a cause and effect of each other, manifesting as Yin deficiency, Yin and Blood deficiency, Yin and Yang deficiency, Yin deficiency and Yang hyperactivity, Yin essence deficiency, Yin and fluid deficiency, Yin deficiency and internal dryness, which can then develop into Yin deficiency and This can lead to pathological changes such as loss of yin and movement of wind. Therefore, we should take precautionary measures to improve the Yin deficiency physique as early as possible through conditioning. In terms of diet, we should eat more sweet and cool nourishing foods, such as mung beans, winter melon, sesame, lily, water chestnut, jellyfish, etc., and choose lean pork, duck, turtle and turtle for meat. Less warm and dry food, not suitable to eat leeks, chili peppers, onions, garlic, unsuitable for eating meat such as mutton, dog meat. Keep a certain lunch break at noon. Avoid staying up late, strenuous exercise, exercise to control the amount of sweating, timely replenishment of water, should not take a sauna, must quit smoking and alcohol. Daily physical exercise is only suitable for doing small and medium intensity, intermittent physical exercise, can choose taijiquan, taiji sword, qigong and other traditional fitness programs that combine movement and stillness.