Water is your body's most essential nutrient. Only oxygen i more important to life. Flesh feels solid, but the human body actually is about two-thirds waterใ
Water is a regulator and is vital to every body function. Mainly through the plasma in your blood, water carries nutrients to and transports waste from your cells. Water lubricates your joints and mucous membranes. It enables you to swallow and digest foods, absorb nutrients, and eliminate wastes. Through perspiration, water helps your body cool down and prevents the buildup of internal heat.
Most people use about 10 cups (2.4 I) of water a day. If they sweat a lot from fever, hot weather, or strenuous exercise, they use more. Some water can be replaced by drinking fluids (juice, milk, water) about 6 to 8 cups(1.4 to 1.9 I) daily.
Food also supplies water. On average. fruits, vegetables, and milk products contain about 75 percent water, poultry and meat, 50 to 60 percent; and grain products. between 5 and 35 percent.