天冷时节,气温低,湿度小,对人的生理机能和身体状况均有一定的影响。人体为了适应冷的气候,就会采取一定的防御和保护措施,但如果单凭经验和感觉,有些方法常常会步入误区。舔嘴唇不能保湿寒冷时空气干燥,人的嘴唇容易出现干裂,引起不舒适、疼痛和出血。不少人喜欢用舌头舔嘴唇,以为这样可以湿润和舒服一些,但结果却适得其反。因为唾液是由唾液腺分泌的,里面含有淀粉酶等物质,比较黏稠,舔在嘴唇上,就好像抹了一层浆糊。水分蒸发完了,嘴唇会更干燥,更容 Cold weather season, low temperature, humidity, on the physiological function and physical condition have a certain impact. In order to adapt to the cold climate, the human body will take some defensive and protective measures. However, if the experience and feeling alone, some methods often go wrong. Licking lips can not moisturize dry air, people prone to chapped lips, causing discomfort, pain and bleeding. Many people like to use their tongue to lick their lips, thinking that they can be moist and comfortable, but the result is counterproductive. Because saliva is secreted by the salivary glands, which contains amylase and other substances, more viscous, licking the lips, as if wiped a layer of paste. When the water evaporates, the lips will be drier and more receptive