Wash Hair At Night Would Do Harm To Health

In this high-intensity and fast-paced modern life environment

, few people can keep the good habit to keep early hours. They even have no time to eat before go to work, not to mention to wash hair and until it is dry without hurry. Then what we should do and how can do in this fast-paced life style. Many people wash hair at night, because they only have time at night, I am one of them. Dragging the tired and exhausted body, hastily wash hair and then fell down to sleep. Though sleep with the wet hair makes us very uncomfortable, we are so tired that we can't wait it become dry. Wash hair at night would lead to headache, does this have some basis? This article will analyze this phenomenon and introduce you some tips on wash hair.

Is it true that sleep with wet hair can lead to headache; in fact, it is inevitable that sleep with wet hair would lead to headache; this has some close relationship with the indoor temperature and self-resistance to coldness? In the process of metabolism, our body would constantly produce heat to maintain the body temperature and at the same time, the heat would spread to the surface of skin through the blood circulation and continually spread to the outside world. People who have strong immunity can make a balance between the heat production and heat output through the normal function of body temperature regulation. After washing hair with the hot water, the scalp capillary vessel will extend and heat output will increase. Besides, because the hair is wet after washing, while large of amounts of water evaporated, it would also take away a lot of heat. Due to the large amount of heat output, our body temperature will lower, so it can easily cause vasoconstriction. As we all known, vascular headache is the most common type of headache.

In addition to the vasoconstriction, cold stimulation can lead to high blood pressure and blood viscosity increasing which can lead to the formation of blood clots within blood vessels and thus cause headache.

Besides, bacteria are also one the factor that can cause headache. If sleep with wet hair, the regulation function of the body temperature regulation center would be reduced, thus we would contract blood vessels with reflex; this would lead to a reducing of the blood flow and our respiratory resistance would also be reduced. So, various bacteria would enter to our body.

According to this, if you have to wash hair at night, you had better make hair dry before sleep.

by: venturiwang

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