The body has no provision to store water. Therefore, the amount of water lost each day must be continually replaced to maintain good health and proper body function.
Water is used for EVERY bodily function. On average, we lose about 10 cups of water each day just through perspiration, breathing, urination and bowel movements. This does not include HOT DAYS or exercise when you perspire even more. The average adult needs eight to 12 cups of water each day. To avoid dehydration, the body needs an ongoing supply of water throughout the day. By the time you feel thirsty, you can already be on your way to becoming dehydrated and feeling ill. To be sure you are properly hydrated, check your urine to make sure it is clear (meaning diluted) rather than a darker yellow. If the body doesn't receive fresh water daily it will try it best to function with recycled water until it finally breaks down.
Look at the symptoms and dangers of dehydration, they will open your eyes! Make sure the children and elderly in your family are getting enough water.