After drinking alcohol, people are stimulated by alcohol, their blood vessels dilate, and a lot of body heat will be released, so they will have a feeling of fever, but this feeling will soon disappear. Especially when the heat is released to a certain extent, people will feel cold instead. The reason why cotton-padded jackets and down jackets have long-lasting cold resistance is that they can reduce the loss of heat, and the main components of wine are water and alcohol, which not only do not produce heat themselves, but will cause heat volatilization.

The more clothes, the better.

Clothing itself does not generate heat, but only plays the role of isolation. It buffers the convection between the cold air outside and the hot air on the body surface, so that the heat of the human body can be preserved. Physiologically speaking, wearing too much clothes will inhibit the adaptability of the body's thermoregulation function and weaken the body's ability to keep out the cold. Therefore, dressing in winter can only reach a suitable thickness.

3, licking your lips can moisturize.

When the air is dry in cold, people's lips are prone to chapping, causing discomfort, pain and bleeding. But licking your lips with your tongue is counterproductive, because saliva is secreted by salivary glands, which contains amylase and other substances. Sticky, licking your lips is like smearing a layer of paste. After the water evaporates, the lips will be drier and more prone to peeling.

4. Need more sleep

Although it is natural that people want to lie in bed lazily, in fact, we don't need more sleep, perhaps because of the lack of sunshine in winter, which makes us feel sleepy. There is nothing wrong with going to bed early, but don't sleep too much. Some people find that the more they sleep, the more sleepy they are, and even the more sleepy they are during the day.

5, a lot of depression.

Gray, dreary sky, holiday stress, cold weather. People naturally think that depression is the peak in winter. However, health experts say this is just a rumor. Contrary to popular belief, depression is no more rampant in winter than at other times, but what happens when people feel sad in winter? Holiday sadness! This is a serious, temporary and stress-related emotion. Some people may also have seasonal emotional disorders, some of which are similar to depression, such as insomnia, dreaminess, irritability and inattention, but this only happens in winter.

6. You need to wear a hat

If you don't wear clothes, any part of your body exposed to the air will cause you to lose heat. However, if you don't wear a hat, it won't cause any big risks to your health. If you wear shorts and a hat, its thermal insulation effect is not as good as wearing warm autumn trousers without a hat. The bottom line is: wearing a hat is absolutely great in cold weather. But it's no big deal if you forget to wear your hat when you walk your dog.

7. Wear a mask to prevent colds

In the cold winter, some people often wear masks when they go out, thinking that this can prevent colds and colds. In fact, this is unscientific, because people's nasal cavity and the whole respiratory tract are covered with many mucous membranes, and there are microvessels under the mucous membranes. When the nose sucks in cold air, it passes through a winding pipe and enters the lungs, and it is close to body temperature. This physiological function of the human body can be enhanced through exercise, thus improving the cold tolerance. If you wear a mask all day, the mucosa of the nasal cavity and the whole respiratory tract will not get exercise, and it is easier to catch a cold if you have a slight cold.

8. Sleeping with your head covered is the most comfortable.

Sleeping with his head covered, in addition to the lack of oxygen, leads to dyspnea and dizziness, and a large amount of water vapor exhaled from his mouth also makes the humidity in the bed increase sharply, and the whole body will become uncomfortable. Experts found that the most comfortable bed needs a "micro airflow" of 0.2 meters per second. Generally speaking, as long as you don't wrap the quilt into a "cylindrical shape" when sleeping, there is a certain space between the quilt and the body, and there are 1 ~ 2 small gaps between the quilt under the shoulder and the quilt cover, which can basically reach the standard of "micro-airflow" that makes the human body comfortable.

9. Close the doors and windows without ventilation.

Some people keep their doors and windows closed all day in winter, thinking that the indoor temperature is high and people are not easy to catch a cold. Actually, it is not. According to experts, the human body will produce more than 500 kinds of chemicals in the process of metabolism, and only 149 kinds are excreted from the respiratory tract. There are a lot of bacteria, viruses, carbon dioxide and dust in the air. In this kind of air, people are prone to colds and coughs, so we should always open the windows to keep the air fresh. In winter, open the window for ventilation 2-4 times a day, about 10 minutes each time.