Water constitutes about 60% of an adult's body weight and is essential for many bodily functions like regulating temperature and transporting nutrients. The body loses water through urine, sweat, and breathing and needs to replenish it daily. Most health organizations recommend drinking around 8-12 cups of total water per day from water, other beverages, and food. Not consuming enough water can lead to dehydration, while consuming too much can cause water intoxication.

1. Water and Minerals Charles Lohman