As the saying goes: "spring covers autumn, no miscellaneous diseases." The weather changes greatly in spring, which is very easy to be warm and cold at first. In addition, when spring returns to the earth, the Yang of the human body begins to tend to the surface, the reason begins to become loose, and the resistance to cold evil is weakened. Once encountering the "cold in late spring", people often feel that they are "not as frost resistant as autumn", especially the elderly, children, pregnant women and patients with chronic diseases. They are prone to cold due to maladjustment, leading to the occurrence of various diseases. According to the Yellow Emperor's Internal Classic, "Yang is nourished in spring and summer, and Yin is nourished in autumn and winter". Nourishing yang in spring and summer means keeping healthy and growing. In terms of spirit, diet and daily life, spring health preservation must comply with the characteristics of spring Yang Qi and the beginning of all things, pay attention to the protection of Yang Qi and focus on the word "health". So, how should chunwu "cover"? Cover your stomach. It is mainly to cover the navel, which is also called Shenque point. Warmth here can encourage the Yang Qi of the spleen and stomach. Especially for those who are afraid of cold and love diarrhea in the stomach, special attention should be paid to the warmth of the navel. Cover your feet. Cold starts from the foot, and the health care in the four seasons should pay attention to the warmth of the foot. Clothes should be "thick at the bottom and thin at the top" in spring, which can raise Yang and close Yin. The lower body is rather too warm, and the upper body can be slightly reduced, so as to make Yang Qi grow. Cover your back. According to the theory of traditional Chinese medicine, the back belongs to Yang, and the Du pulse running through the whole back is also known as the "sea of Yang pulse". The back waist is also the house of the kidney. People with poor gastrointestinal tract and kidney yang deficiency should not hurry to wear low waist pants. Of course, the degree of "covering" should be based on feeling warm and not sweating. If you don't feel dry throat and tongue when "covering", and your body doesn't sweat, you don't have to hurry to reduce your clothes even if the temperature is slightly higher. If you feel sweating after "covering", you should change your clothes early, otherwise it is easy to catch a cold when "covering" sweating. If the maximum temperature for two consecutive weeks is above 15 degrees Celsius and relatively stable, there is no need to "cover". (outlook new era)