The head is the meeting of the sun and should not be close to high temperature. Excessive head temperature is not only harmful to health, but even a pathogenic factor. Sun Simiao, a famous doctor in the Tang Dynasty, once pointed out that no matter how cold it is in winter or how low the temperature in the bedroom is, "you can't put a stove on your head", otherwise it will easily lead to headache, dizziness or respiratory diseases, and even gas poisoning in severe cases. Life experience tells people that when work is stressful and busy, especially those who use their brains too much, they are most likely to get dizzy and their thinking ability will decline. At this time, if you take a break and wash your hair with cold water, you can often get immediate results in clearing your brain and improving your thinking ability. Keeping your head relatively cold is also good for improving sleep. Insist on washing your face with cold water for many years, which can prevent colds. When the temperature is low in winter, people are most likely to catch a cold, but they insist on soaking their faces and hands in cold water. It can force the blood vessels in the nose, face and even upper body to contract, and improve the ability of human body to resist cold, so it can effectively prevent colds.
People's feet, farthest from the heart, are the most vulnerable limbs to cold evil, especially in severe winter. Some people like to keep warm around the stove in winter and often roast their feet with fire, which is not good and can easily lead to chapped skin on their feet. The best way to warm your feet is to scald them with hot water. It is best to stamp your feet for more than 20 minutes at a time. When the water temperature is low, pour some high-temperature water from the thermos bottle to ensure that the water temperature is always hot. Insisting on washing feet with hot water has at least the following advantages: ① dispelling cold and warming up; (2) Promote systemic blood circulation and eliminate fatigue in time, especially soaking feet with hot water immediately after an urgent March or a long journey, which can quickly eliminate fatigue and restore physical strength; 3 Washing feet with hot water after morning exercise can strengthen the brain and strengthen the body, so there is a saying that "washing feet in the morning is not as good as taking medicine"; (4) Soaking feet with hot water before going to bed at night can improve sleep, make people fall asleep early and help improve sleep quality; ⑤ Hot water scalding feet is also beneficial to the treatment of tinea pedis.