It's cold, why do you wear too many clothes but not warm? What is the reason?

When winter comes, everyone takes out warm clothes and wraps them up. However, many people obviously wear a lot of clothes but still feel cold. These people are just weak. Do they need more exercise? On the surface, physical exercise can improve muscle vitality, promote blood circulation, and indeed improve cold resistance. But don't forget, there are many muscular men who have good physical fitness and are also very afraid of the cold. Therefore, fear of the cold cannot be equated with physical weakness or poor physical quality.

People come from warm-blooded animals, and their average body temperature is between 36℃ and 37℃ (armpit temperature). If the ambient temperature exceeds this range, people will feel hot, thus increasing heat dissipation through sweat evaporation. If the ambient temperature is lower than this range, people will increase heat production and reduce heat dissipation, thus achieving a dynamic balance between heat dissipation and heat production. The ultimate goal is to keep the body temperature constant. If you still feel cold after wearing a lot of clothes, besides poor physical fitness, it is likely to be caused by the following four reasons.

First,? Calm, cool and natural? . We often hear this word in summer, but it still exists in winter. For sedentary people, it is probably because of insufficient heat production that they need to wear more clothes than others. For example, the author's friend Xiao Zou is a senior otaku who sits in front of the computer all day. Soon after beginning of autumn, Xiao Zou put on a cotton-padded jacket, but most people don't wear it that thick. So when you feel cold, you can take a walk and jump, and your body will be much more comfortable.

Secondly, I think I wear more clothes and dress appropriately. In the south, many people can wear a pair of velvet winter trousers for the winter, but this is not suitable for all southerners. At this time, wearing an extra pair of autumn trousers will improve the warmth retention effect. On the other hand, many people like to choose tight thermal underwear. This practice is actually not warm and even counterproductive. The reason is that the cold air and warm air in the clothes interlayer form convection, which will make people feel warm. Tight thermal underwear directly squeezes out the air in the first interlayer, and the temperature felt by the skin becomes the temperature of thermal underwear. For example, when you walk into a warm air-conditioned room in a cotton-padded coat, it is your face that first feels warm, not other parts of your body.

Third, insufficient thyroid secretion. In daily life, thyroid hormone can accelerate the oxidation of substances and improve the thermogenic effect. If a person's thyroid hormone secretion is insufficient, it will cause a situation of liking heat and fearing cold. This kind of person is a person who really wears a lot of clothes but still feels cold. It is recommended to eat more selenium-enriched foods and supplements.

Fourth, afraid of the cold. ? Heating in the north depends on heating, and shaking your legs in the south? This is a joke, but who can bear hardships more, southerners or northerners? One program did an experiment. Four southerners and four northerners were found in a wet and cold freezer to see who could last longer. As a result, three northerners were left behind. Yes, people can't change their environment, they can only adapt, and cold tolerance is also practiced. If you lack the determination to overcome and touch the cold, use it? Afraid of cold constitution? Come and comfort yourself.