Good hydration helps give skin a healthy look, cushions joints and helps prevent constipation.
Most people need at least eight glasses of water each day. The actual amount an individual needs is affected by body size, activity level, altitude, physical health, caffeine and alcohol consumption, air temperature, humidity and the amount of fiber in the diet. Urine that ranges from clear to straw-colored. Dark urine is a sure indication of poor hydration. Healthy individuals should be able to urinate every hour or so.