任何人都不能缺水,特别是老年人。因为老年人各种生理功能减退,储备能力降低,对缺水更为敏感。这就要求经常喝水,除上午、下午外,还要在早晨和睡前各饮一杯水。有的人担心夜晚起床小解影响睡眠,以致晚上不敢喝水,其实这是不对的。一个健康的成年人,每小时皮肤蒸发30毫升汗液,若从晚上9点至次 No one can lack water, especially the elderly. Because of various physiological functions of the elderly decline, lower reserve capacity, more sensitive to water shortages. This requires regular drinking, in addition to the morning, afternoon, but also in the morning and before going to bed drink a glass of water. Some people worry that getting up at night may affect their sleepiness and may not drink water at night. Actually, this is not right. A healthy adult, the skin evaporates 30 ml of sweat per hour, from 9 pm to the next