出汗,是人体的一种正常生理现象,一滴水能映出太阳的光辉,一滴汗也包含着不少的学问。早在1833年就有人证实汗是由汗腺分泌的。每个人的汗腺并不一样,小孩比成人单位面积汗腺多,因此出汗也多,老年人的汗腺作用衰退,出汗也少。人体除嘴唇等极少部位没有汗腺外,全身有200万～500万个汗毛孔,尤以前额、胸脯、手心、脚心分布较多,大汗腺则分布在腋窝、腹股沟、外阴、脐部、肛门和乳头周围。一 Sweating is a normal human physiological phenomenon, a drop of water can reflect the sun’s glory, a drop of sweat also contains a lot of learning. As early as 1833, it was confirmed that sweat is secreted by sweat glands. Each person’s sweat glands are not the same, children sweat glands more than adult unit area, so sweat and more, the elderly sweat gland recession, sweating less. Except lips and other parts of the body there is no sweat glands, the body has 2 million to 5 million pores, especially in the forehead, chest, palms, toe distribution, apocrine glands are distributed in the armpits, groin, vulva, navel, anus And around the nipple. one