Water makes up about 60 percent of the human body, and all of the body's systems rely on hydration to function properly, report doctors at the Mayo Clinic. You need to drink water regularly to prevent dehydration, which can lead to impaired functions and lowered energy.
Flushing
Water flushes harmful toxins from the organs. Toxins enter through food, pollution and medications.
Nutrition
Nutrition that's ingested relies on enough water to carry important nutrients through the blood and to the other organs in the body.
Moisture
Regular water consumption is vital to keep the nose, ears and throat tissues moistened. Skin also receives valuable moisturizing from water.
Lubrication
Water is required to lubricate joints and make movement more fluid. The digestive system needs to remain lubricated all day to promote proper waste elimination.
Regulation
Doctors at Iowa State University report that water is required to regulate proper body temperature. Working muscles create sweat, which is used to cool the body and must be replaced by drinking water.
Needs
Thirst is not always a good indicator of water needs. Dehydration is often already starting by the time a person is thirsty, especially athletes who do not hydrate as they perform.
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