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盛夏天气,我们的皮肤会冒出粒粒汗珠。汗是从哪里来的?这是皮肤的汗腺分泌出来的。人体除了嘴唇等极少数部位,几乎全身都有汗腺。出汗可以帮助人体调节体温。大热天里,一个人平均一天出汗4~5升;春秋季节,一天的排汗量是800毫升左右;冬天最少出汗,一天也要排出4 00~5 00毫升汗液,相当于三大杯水。有人发现,有一半汗液是在睡觉时出的。也就是说,每天晚上约有一杯半的汗水“倒”在内衣和被褥上。因而,我们一定要养成勤换内衣与勤晒被褥的习惯。
Summer weather, our skin will emerge granular sweat. Where does sweat come from? It is secreted by the sweat glands of the skin. In addition to a very small number of parts of the human body, almost sweat glands throughout the body. Sweating can help the body regulate body temperature. On a hot day, an average person sweats 4 to 5 liters a day; in spring and autumn, one day’s sweat volume is about 800 ml; winter, at least sweating, one day also expels 400 to 500 ml of sweat, which is equivalent to three cups water. Some people find that half of sweat is out of bed. That is, every night about a half cup of sweat “pour ” in the underwear and bedding. Therefore, we must cultivate the habit of frequently changing underwear and bedding.