Water, the most common substance on Earth, is also the nutrient that your body needs the most.

How much water should you drink every day? Click here to get a free copy of our helpful book, "Water & Health" for all the answers.

Between 55 and 75 percent of adult body weight is water (about 10 to 12 gallons). Water is critical in regulating all body organs and your body temperature as well as dissolving solids and moving nutrients throughout the body.

Research has shown that proper hydration may minimise chronic pains such as rheumatoid arthritis, lower back pain, migraines, and colitis as well as helping to reduce your cholesterol level and your blood pressure.

Because water is naturally low in sodium, has no fat, cholesterol or caffeine and isn't flushed straight through the body like many other beverages, it's the natural solution that your body chooses to help reach its daily fluid quota.