Cold introduction:
Generally speaking, cold and heat are relative. For example, in summer, I feel that the well water just drilled is cold, and in winter, I feel that the well water is hot. In fact, the temperature of well water has not changed much, and the temperature we feel is relative to the surrounding temperature. Temperature is a physical quantity that quantitatively measures the degree of heat and cold of an object.
Why women are more afraid of cold than men;
As the saying goes, young people sleep on a cold kang and have strong firepower. In fact, it's not just the young man who has strong firepower. American medical experts say that generally speaking, men have more firepower than women. Why is this? First of all, men have more muscles and less fat, while women have less muscles and more fat. Muscle consumes a lot of calories and releases a lot of heat energy in the process of oxidizing carbohydrates and fats.
Therefore, men's metabolism is fast and women's metabolism is slow. Men consume more calories than women, and the body surface temperature of men is higher than that of women. If men lose weight, the effect is much more obvious than that of women. Secondly, from a physiological point of view, women are more sensitive to cold than men.
This is because the "sensors" in women's skin are more sensitive than men's and will transmit "cold" information to the brain faster. After receiving the cold information, the brain will immediately order the metabolic system to work faster, and then order the blood circulation system to retreat to the second line of defense, that is, from the skin, limbs to the trunk. This is why when the temperature is low, people will feel cold hands and feet.
When the temperature drops to an unbearable level, the human body will instinctively overreact, that is, the metabolic process will be faster and the blood circulation will retreat faster. In this case, the difference between men and women will be more obvious. Because men have more muscles than women.
Metabolism is faster than that of women; The "sensor" in men's skin is slower than that in women, and the blood circulation system is much slower than that in women. Therefore, at this time, men are still warm and women are cold.