Summer is hot and humid. Many people often put a wet towel around their necks when they go out, hoping to cool off the heat! However, it recently circulated on the Internet: "The way of putting a wet towel around your neck not only does not help to cool down, but may also lead to moisture entering your body, which in turn makes your body wetter in summer. The statement triggered a heated discussion among netizens. Is this method feasible?

A wet towel around your neck helps to cool down and cool off the heat? The doctor replied …

Ye Yanting, a Chinese medicine doctor, said that hanging a cool wet towel around your neck is indeed a common way to cool down in hot summer. In fact, when the human body is affected by the external hot climate, the core temperature of the body will also rise. At this time, in order to regulate the body temperature, the human body will rapidly dilate blood vessels, which will greatly increase the blood flow on the body surface, and the heat energy in the body will be lost through perspiration.

Therefore, there is a theory that if a cold and wet towel can be applied to the neck at this time, it can help cool the blood vessels in the neck that expand due to heat, regulate the blood flow in the head and neck, and make the brain feel cool immediately. However, because the most effective heat dissipation mechanism of human body is to reduce the whole body temperature through perspiration, this method can only temporarily reduce the local body surface temperature, which is completely useless to the loss of core temperature of human body.

Hanging a cool wet towel around your neck is really a common way to cool down in hot summer. But does it really work? Not only is the cooling effect limited ~ wet towel around the neck is a hidden worry.

Moreover, it is worth noting that due to the efficiency of human sweating, it will be affected by the opening and closing of pores and the humidity of the external environment. In other words, when the human body is in a dry environment and the muscles on the body surface that regulate the opening and closing of pores function normally, the perspiration efficiency of the human body will be more ideal, and the purpose of cooling can be achieved quickly.

Therefore, for the above reasons, if people put a wet towel around their necks, firstly, they can't dissipate heat except that their pores will be covered; Second, when the external humidity increases, it is more likely to be unfavorable to human evapotranspiration. Moreover, from the perspective of Chinese medicine, when the heat, water and moisture in the body cannot be eliminated, it will naturally cause the embarrassment of staying in the body.