Water Facts (page 2) The human body is made up of 66% water. Our bones are 33% water, our brain cells contain 75% water, our skin averages about 70% water, and even our blood is mostly water. The recommended daily water intake is ten (10) 8 oz. glasses. Cold water is better to drink because it absorbs into the body faster and your body then burns calories to heat back up. With a meager 2% loss of your body fluids your energy level can decrease as must as 20%. A 10% loss of body fluids and you will start to loose muscle control. If you loose 20%, of your body fluids death becomes eminent. The average person must consume 2 ½ quarts of water per/day from all sources, i.e., water, food, etc to maintain good health. The average person who lives until the age of seventy will require approximately 1-1/2 million gallons of water throughout their life. More than 70% of the world's population goes without clean water.