Winter health care must pay attention to the following issues: 1, the best time to take care of health care. Experimental evidence: 5-6 a.m. is the climax of the biological clock, body temperature rises, at this time to get up will be refreshed. 2, pay attention to keep warm. Listen to the weather forecast on time, with the change in temperature and add clothes, add warm facilities. Soak your feet in hot water for 10 minutes before going to bed 3, the room temperature should be appropriate. If you turn on the air conditioning temperature should not be too high, the temperature difference between inside and outside the room should not be too large, the temperature difference between inside and outside the room 4-5 degrees is appropriate. 3, the best time for health care. Experimental evidence: 5-6 a.m. is the climax of the biological clock, the body temperature rises, at this time to get up will be healthier. 4, open the window ventilation every day 9-11 a.m., 2-4 p.m. The best effect of opening the window ventilation. 5, morning exercise is not casual. Not too early. Many people choose to exercise in the morning before dawn or at dawn (around 5:00), thinking that the environment is quiet and the air is fresh. In fact, this is not the case. Due to the cooling effect of the air near the ground layer at night, it is easy to form a stable inverse temperature layer, just like a lid, covering the air, so that the pollutants in the air near the ground are not easy to spread, and the concentration of pollutants at this time is the largest. Therefore, morning walkers should consciously avoid this time and choose after sunrise, because after sunrise the temperature starts to rise, the inverse air layer is destroyed and pollutants spread outward. This is a good opportunity for morning exercise. 6, do not choose the woods. Many people think that the woods in the morning exercise, oxygen is sufficient to meet the demand for oxygen during exercise. But this is not the case in reality. Because the chlorophyll of plants can only be photosynthesized with the participation of sunlight to produce fresh oxygen and release a large amount of carbon dioxide. Therefore, the green woods is a good place to walk during the day, but not the ideal place for early morning exercise. 7, middle-aged and elderly people should not exercise in the morning. Because the middle-aged and elderly people’s heart infarction and ischemia, as well as heart rate disorders and other pathologies, in the 24 hours a day, for the morning to noon period was the peak attack. If you exercise during this period, especially in the early morning will induce serious heart rate disorders, myocardial ischemia and other accidents, and even lead to sudden death of catastrophic consequences, while in the afternoon to evening time exercise is rarely occur. 8, drink water as a result of not drinking water overnight, early morning blood is very sticky, increasing the risk of blood vessel blockage. After getting up sympathetic excitability increased, the heart rate accelerated, the heart itself needs more blood, 9-10 in the morning or the highest blood pressure moment of the day, thus the morning is a stroke, infarction of the time, medically known as the devil’s time, early morning after a glass of boiled water, can replenish the body water, the role of washing the stomach and intestines, an hour before meals a glass of water has blocked digestion secretion, promote appetite. 9, sleep. The human body’s “biological clock” at 22-23 hours there is a low tide, so the best time to sleep should be 21-22 hours.