Facts and Figures

At least 60% of the human body is made of water. For example,

• Blood is 83% water
• Muscles are 75% water
• The brain is 74% water
• Bone is 22% water

The total amount of water in the body of an average adult is 37 liters.
A reduction of 4-5% in body water will result in a decline of 20-30% in work performance.
An athlete commonly loses four or five quarts (of water) in a practice session.
A person can live about a month without food, but only one week without water.
Humans drink an average of 2,000 gallons of water throughout their life.
Water intake may reduce the risk of heart attack.

• A six-year study of more than 20,000 healthy men and women aged 38-100 in the May 1, 2002, American Journal of Epidemiology found that women who drank more than 5 glasses of water a day were 41% less likely to die from a heart attack than those who drank less than two glasses.
• The protective effect of water was even greater in men.