Why do you feel colder when you wear too many clothes?

The weather is getting colder and colder, and many people "have three floors inside and three floors outside", feeling that the more clothes they wear, the warmer they will be. But why do some people feel colder when they wear too many clothes?

Why is it colder when you wear too many clothes?

First of all, the warmth of clothes is related to the thickness of the air layer inside the clothes. The more clothes you wear, the thicker the air layer in the clothes will be, and the warmth will increase. However, when the total thickness of the air layer exceeds 15 mm, the air convection in the clothes will increase obviously, but the warmth retention will decrease. Secondly, from a physiological point of view, if people wear too many clothes, people's skin blood vessels will expand due to too much heat, leading to increased heat dissipation and reduced adaptability to external temperature. In addition, if the clothes are wrapped too tightly, there will be too little air between the clothes interlayer, which will accelerate the heat conduction and weaken the heat preservation effect.

How to keep warm and cold?

In fact, keeping warm should not only be "dressed", but also a healthy diet and proper exercise can play a certain role.

In terms of "wearing", we should pay attention to collocation. Wearing light and soft clothes; Wear warm but fluffy clothes in the middle; Wear a windproof coat on the outer layer. At the same time, try to tighten the neckline and cuffs. If the weather is very cold, you'd better wear a scarf, a hat to reduce the heat loss on your head, and a pair of platform shoes to avoid "cold starts from your feet".

Also pay attention to "eating". In winter, the diet should be diversified, with cereals, fruits, meat and vegetables reasonably matched, and high-calcium foods should be eaten appropriately. Root vegetables contain a lot of minerals and are suitable for cold resistance in winter, such as radish, sweet potato, yam, potato and lotus root. In terms of eating methods, stewing root foods with mutton and beef can effectively enhance the body's ability to keep out the cold.

In addition, we should reasonably adjust our diet and daily life to avoid overwork, and at the same time carry out appropriate exercise to keep out the cold, such as running, doing aerobics and washing our faces with cold water.