(1) warm head

According to medical experts, when the temperature is 15℃, the heat emitted by the head accounts for 34% of the whole body. When the temperature is 4℃, it accounts for 50%; When the temperature drops to-15℃, it accounts for 75%. Therefore, wearing a hat in winter can not only reduce head heat dissipation and keep warm, but also prevent colds, headaches, rhinitis, toothache, trigeminal neuralgia and even cerebrovascular diseases.

(2) Warm your face

Wearing a mask when going out in winter can not only protect the face from freezing injury, but also prevent cold air from irritating the nasal mucosa and causing upper respiratory tract infections such as runny nose.

(3) Warm back

Because wind-cold easily invades the human body from many acupoints on the back meridians, damaging the yang spirit, leading to the destruction of the balance of yin and yang, the decline of human immune function and the weakening of disease resistance, leading to various diseases or recurrence of the weak, it is very important to keep the back warm in winter.

(4) Warm feet

As the saying goes, "Cold begins with feet". There are many acupoints in the footsteps, and once the feet catch cold, it will cause discomfort in all parts of the body, such as contraction of mucosal blood vessels in the upper respiratory tract, decreased blood flow and decreased disease resistance, which will lead to a large number of viruses and bacteria hidden in the nasopharynx, causing human colds or tracheitis, asthma, arthritis, dysmenorrhea, low back and leg pain and other old diseases to recur. Therefore, we should pay attention to keep shoes and socks warm and dry in winter and clean them regularly. Walk more at ordinary times to promote blood circulation in the feet. In addition, after scalding your feet with hot water before going to bed, massage your feet with your palm for 10 minutes, which can play a health care role.

(5) Warm hands

Hands should always touch the cold air and water outside, especially women's hands. If they are not careful, they will get frostbite easily. Therefore, it is necessary to apply hand cream every day and wear gloves when going out.

Second, common sense of keeping warm in life

(1) Opening the window for ventilation will not catch a cold.

Close the doors and windows in winter, smoke, dust, human body's own excrement and so on will affect the respiratory tract. Therefore, we must pay attention to room ventilation in winter, and open the window 2-4 times a day for no less than 15 minutes each time, which is not only beneficial to health, but also makes people feel cheerful and refreshed. Special reminder is that families who use air conditioners should not adjust the air conditioner temperature too high. When the temperature difference between indoor and outdoor is too large (above 25℃), once they go out, they are prone to catch a cold. People with cardiovascular and cerebrovascular diseases are prone to myocardial infarction, stroke and facial paralysis.

(2) Hot pot is hot and avoid overeating.

The main ingredients and seasonings of hot pot tend to be warm. From the perspective of Chinese medicine, dryness and heat will also consume people's qi and blood and burn people's body fluids. In addition, although the outside climate is cold in winter, people wear thick clothes, live warm and reduce their activities, which may lead to the accumulation of heat in the body not being properly distributed, which may easily lead to stomach and lung fire, and even lead to upper respiratory tract or gastrointestinal diseases. Therefore, eat hot pot in moderation and drink plenty of water after eating hot pot.

(3) Don't sweat when dressing according to the weather.

Don't wear too much in winter, or you will catch a cold when you sweat and catch the wind. In addition, the more clothes you wear, the better, because the warmth of clothes is related to the thickness of the air layer inside clothes. When the total thickness of air layer exceeds 15 mm, the air convection in clothes increases obviously, but the warmth retention decreases. Moreover, from a physiological point of view, wearing too many clothes will inhibit the sensitivity of the human body's regulatory function and weaken the human body's ability to keep out the cold.

(4) frequently bask in bedding.

As we all know, air is a bad conductor of heat, and its heat dissipation coefficient is only 0.027. Therefore, increasing the air volume of bedding is equivalent to improving the ability of keeping warm. Bedding becomes fluffy after drying, which not only increases the air volume, but also increases the thickness. So it always feels warm to cover a dried quilt.

(5) Appropriate physical exercise

It is difficult to persist in physical exercise in winter. If the climate is very cold, I suggest you choose indoor sports, such as doing gymnastics or yoga at home, or going outdoors when the weather is fine. It is best not to choose early morning for the elderly to exercise in winter, because cold air can easily lead to upper respiratory tract infection and joint diseases.

(6) Supplying necessary water.

It is dry in winter and there is little exercise, so many people think that they can drink less water. This is actually a wrong idea. Drink 8 glasses of water every day and eat more fruits and vegetables. Cabbage and radish are both water-rich vegetables.

Third, the method of keeping warm and cold in winter

(a) Warm clothing: the outermost clothing should be windproof, and wool, fur or leather clothing can be selected; A relatively stagnant air layer can be formed in the down jacket, which has good warmth retention and is the first choice for winter tourism. Underwear should be soft, absorbent and breathable to keep warm.

(2) Gloves and hats: minimize the exposed parts of the skin. For parts prone to frostbite, exercise or massage regularly. It is best to wear gloves and earmuffs when traveling in snowy days.

(3) Cold resistance in diet: In winter diet, the intake of protein, carbohydrate, fat, minerals and vitamins is more than usual, so we should not overemphasize the restriction of fat and carbohydrate intake as usual. Lean meat, eggs, fresh fish, bean products and animal liver have many benefits to supplement human body heat, so you can eat more appropriately.