most water is lost daily via what organ
The body loses water primarily by excreting it in urine from the kidneys. Depending on the body's needs, the kidneys may excrete less than a pint or up to several gallons of urine a day. About 1Â½ pints (a little less than a liter) of water are lost daily when water evaporates from the skin and is breathed out by the lungs. Profuse sweatingâwhich may be caused by vigorous exercise, hot weather, or a high body temperatureâcan dramatically increase the amount of water lost through evaporation.