In winter and March, plants wither and insects freeze, which is the season when everything in nature hides, and people's yang should also be hidden in it. Therefore, the basic principle of health preservation in winter should also be "hiding". Because the metabolism of the human body is relatively low after the yang is turned off, it is necessary to rely on the "kidney" as the driving force of life to ensure that life activities adapt to the changes in nature. In winter, normal renal function can adjust the body to adapt to the changes in severe winter, otherwise it will cause metabolic disorder and produce diseases. Therefore, keeping in good health in winter is very important. The following points are the key points to implement this principle.

Psychological nursing: In addition to maintaining psychological peace, we should learn to adjust bad emotions in time when God is hiding in it, and restore psychological peace as soon as possible when we are in a state of tension, excitement, anxiety and depression. At the same time, seasonal affective disorder should be prevented in winter. The so-called seasonal affective disorder refers to the phenomenon that some people are prone to depression, lethargy and groggy in winter, and it appears every year. This phenomenon is more common among young people, especially women. The way to prevent it is to get more sunshine, which is a natural therapy to regulate emotions.

Diet conditioning: The basic principle of diet health in winter should be "storing calories". Therefore, the foods to be eaten in winter are mutton, dog meat, goose, duck, radish, walnut, chestnut and sweet potato. At the same time, we must follow the principle of "eat less salty and suffer more": winter is the time when the kidney meridian is vigorous, while the kidney is salty and the heart is bitter. Eating too much salty will make the kidney water that is already high stronger, thus weakening the power of the heart yang. Therefore, we should eat more bitter food to help the heart yang. Avoid sticky cold food in winter diet, because this kind of food belongs to "drinking", which is easy to damage the yang of the spleen and stomach.

Personal health care: Huangdi Neijing pointed out: "Get up early and get up late to wait for the sun." It means to go to bed early and get up late in winter, and it is better to get up after the sun comes out (especially for the elderly). Pay attention to the following points in daily life in winter: First of all, we should talk about "clothing climate" when dressing, that is, the temperature between the inner layer of clothes and the skin should always be kept at 32℃ ~ 33℃. This ideal "clothing climate" can buffer the invasion of cold climate on human body. Secondly, pay attention to the warmth of your feet. Because the foot is farthest from the heart, the blood supply is small and slow, so the skin temperature of the foot is the lowest. Chinese medicine believes that cold feet will inevitably affect internal organs, which can lead to diarrhea, irregular menstruation, impotence, low back pain and other diseases. Third, opening windows regularly in winter is good for your health. Fourth, it is not advisable to sleep with your head covered. Sleeping with your head covered in winter is extremely suitable for chest tightness and shortness of breath caused by lack of oxygen. Fifth, avoid urinating at night. Because of the long winter night, holding urine for a long time will accumulate toxic substances, causing cystitis and urethritis.

Exercise strengthens the body: As the saying goes: "Exercise more in winter and get sick less; Lazy in winter, drink a bowl of medicine. "Facts have proved that participating in outdoor activities in winter can make the body get appropriate cold stimulation, accelerate the heart beating, deepen breathing, strengthen metabolism in the body, increase the heat generated by the body, and be beneficial to health.