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Sunday 05 July, 2015 | RSS Feed

Women in the evening her hair more harm

by Administrator

Night after shampooing, if sufficient time to dry the hair went to bed, then of course the better. But sometimes too busy, after 10 at night when the shampoo, wash the head after too tired to keep my eyes open eyelids heavy, so the hair was dry on your sleep. To do so, the older generation will say that the future will be a headache, in fact, after a study of modern science, people find it not unreasonable. And we need to know about the thermoregulation, the body in the metabolic process, always continue to produce heat to maintain body temperature, the heat conduction also through blood circulation to the body surface, by radiation, conduction, convection and evaporation, etc. continue to Bleeding outside body resistance and strong people, the normal function of temperature regulation, by regulating heat production and heat two processes are balanced, that is, when the temperature tends to decrease, then increase heat production, heat reduction, so that the temperature remained at 37 ℃. But for people who are weak body resistance, which automatically adjust the temperature, so that the body's ability to maintain normal body temperature is poor, so when the body or a local exposure to cold on colds. And we use hot water to wash your hair, because the thermal effects, so that the scalp telangiectasia, increased body heat to the surrounding radiation, and because after shampooing the hair is wet, there is a lot of water evaporates out, but also take away a lot of heat . Usually one gram of water evaporates to take away 500 calories. Because of heat increases, so that the body cold, so reflex upper respiratory tract capillaries shrink, local blood flow reduction, upper respiratory tract, lowered immunity, it makes partial pre-existing virus or bacteria take advantage of growth and reproduction, resulting in the respiratory infections, and therefore cold symptoms such as runny nose, stuffy nose, headache or fever. And if the hair is not asleep in dry conditions, when the central regulation of body temperature regulation dysfunction, it more susceptible to colds. Therefore, in general, it is best not to wash your hair before going to sleep, if you want to wash it with a dry towel, and then use the hair dryer to dry hair before sleep, so do not catch cold. Under dry conditions the hair did not fall asleep, colds.

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