许多人有睡觉前洗头洗澡的习惯,一是把头上的尘土洗掉,干干净净上床;二是轻轻松松、舒舒服服上床睡一觉,驱除白天的疲劳。其实,人们劳累了一天之后,晚上是最为疲劳不堪的时候,也是人们身体抗御病痛能力最低的时候。有晚上睡觉前洗头习惯的人,由于没有认真地擦干头发,使大量的水分滞留于头皮表面,尤其是冬天夜间气温较低时,残留水遇冷空气极易凝固。长期有残留水凝固头部,会导致人们 Many people have the habit of washing their hair before going to bed. First, wash the dust off their heads and go to bed clean. Second, they easily go to bed and sleep comfortably, expelling the fatigue during the day. In fact, after a long day of exertion, people are most tired and tired at night, and they also have the lowest physical ability to resist illness. People who have the habit of shampooing before going to bed at night have not been able to wipe their hair seriously, leaving a large amount of water to stay on the surface of the scalp. In particular, when the temperature is low at night in winter, residual water can easily coagulate in cold air. Long-term residual water to solidify the head, will lead people