水是维持人体正常生命活动的重要物质。人体如水摄入不足,不但可以导致精神不振、口干舌燥、浑身无力等不适症状,还可影响机体各器官系统的功能。炎炎夏日,为了抵御高温环境和维持自身正常、恒定的体温,人体必须依靠大量排汗来散热。伴随着出汗,人体会出现口渴 Water is an important material to maintain the normal life activities of human body. Insufficient human intake of water, not only can lead to depression, dry mouth, weakness and other symptoms, but also affect the body’s various organ systems. In summer, in order to withstand the high temperature environment and maintain its normal, constant body temperature, the body must rely on a large number of sweat to heat. Accompanied by sweating, the body will be thirsty