Big cold, is the last festival of winter, indicating the end of the old year and the beginning of the new year. The cold season is traditionally an important period of health care, folk since ancient times that there is a rumor that “big cold cold, wind protection against cold; drink ginseng astragalus wine in the morning, take wolfberry chrysanthemum pills in the evening”, which can be seen. During the cold season, the yin and yang between heaven and earth begin to wax and wane, and the cold and temperature are in and out of each other. During this period, both the cardiovascular system and respiratory system diseases, are very easy to aggravate and attack. According to statistics, in the month of cold, the incidence of myocardial infarction, stroke are the highest level of the year; some hypertensive patients with poor vascular elasticity, blood pressure fluctuations within a day often increase; and many patients suffering from chronic obstructive pulmonary disease (commonly known as the old slow branch) inattentive also easily induced at this time of persistent illness. The first thing you need to pay attention to is the maintenance of Yang Qi during the cold season. 1, pay attention to the cold to keep warm. Although this season is not as cold as around the winter solstice, but still in the “four nine days”, the so-called “three nine four nine ice walk” that is, before and after the cold period. Even in the middle and lower reaches of the Yangtze River, there are often sudden cold waves. Weak and old people better live in a greenhouse, reduce the number of people going out, risk touching the wind and cold. From indoor to outdoor, to adapt to the cold air in the porch, and then go out. 2. In terms of living, go to bed early and get up late to comply with the characteristics of the winter closed, so that the Yang energy can be fully restored during sleep. Before you get up in the morning and go out, it is advisable to have hot drinks such as milk and soybean milk to invigorate the spleen and stomach and to harmonize with the Qi of the guard table. Before going to sleep at night, it is advisable to soak your feet in hot water or medicinal soup to unblock the blood vessels and harmonize the vital energy of the blood. 3, it is advisable to abstain from lust, even young people should not be wanton love of sexual intercourse, arbitrary felling injury to the kidney in the vital energy. 4, in the sunny hours moderately increase outdoor exercise, to the beginning of spring after the rise of Yang Qi, Qi regulating a good foundation. But do not sweat profusely, to avoid Yang Qi with sweat out, but suffer damage. Another focus of health care during the cold period is to nourish Yin. Generally in the Yangtze River basin from the winter solstice to reduce precipitation, after a month of the cold season is the driest period, the average air humidity during the day is generally less than 50%, and sometimes only about 30% indoor. With the reduction of water in heaven and earth, the yin liquid in the human body will also be prone to shortage, many people with persistent respiratory problems often have cough phlegm or phlegm sticky cough phlegm feeling. Patients with cardiovascular diseases are more likely to have increased blood viscosity. If the blood vessel elasticity function decreases due to high blood pressure, old age, etc., it is more likely to induce heart attack, cerebral infarction, cerebral hemorrhage and other dangerous situations. 1, pay attention to the regulation of diet. Generally in winter people will eat some hot food to warm the Yang, but in the cold period, some hot and dry food such as spicy, barbecue should not eat more, so as not to disturb the false fire. It is advisable to eat medicinal porridge at this time of year to moisten the lungs and spleen and easy to absorb. Duck meat, almonds, maitake, fungus, etc. can nourish yin and moisten the lungs; ginseng, mutton, dog meat, etc. into the porridge can warm the yang and benefit the qi; angelica, jujube, wolfberry, raw earth, astragalus and other herbs into the porridge can nourish the blood and moisten the lungs, dispel dryness and laxative effect. In addition, you should also eat more yellow and green vegetables, such as carrots, rape, spinach, etc., you can also often eat glutinous rice, but also from the nourishing spleen and stomach meaning. 2, in terms of living, if the indoor heating or air conditioning, in addition to pay attention to frequent ventilation, it is best to use some air humidifiers and the like to improve the humidity in the air, sleep at night if the electric blanket also try not to open overnight or open too hot. 3, as much as possible to increase the amount of water, do not wait for the mouth dry before drinking water. Before going to bed and after getting up, drink a glass of warm water. Also before and after the shower is best to drink a little bit of water each to replenish the lost water. 4, pay attention to the combination of work and rest. After New Year’s Day before the Spring Festival is the busiest time to work, plus the family sweeping the yard, shopping for New Year’s Eve, the human body is very easy to fatigue, exhaustion and injury. So proper rest, keep the mood calm is particularly important. Ming Dynasty famous doctor Zhang Jinyue has a cloud: good supplement Yang, must seek Yang in Yin, Yang to Yin help and biochemical endless; good supplement Yin, must seek Yin in Yang, Yin to Yang win and inexhaustible source of water. The way to maintain health during the cold season is typical of this.