Your lungs expel between two and four cups of water each day through normal breathing - even more on a cold day. If your feet sweat, there goes another cup of water. If you make half a dozen trips to the bathroom during the day, that’s six cups of water. If you perspire, you expel about two cups of water (which doesn’t include exercise-induced perspiration).
A person would have to lose 10 percent of her body weight in fluids to be considered dehydrated, but as little as two percent can affect athletic performance, cause tiredness and dull critical thinking abilities. Adequate water consumption can help lessen the chance of kidney stones, keep joints lubricated, prevent and lessen the severity of colds and flu and help prevent constipation.
Water helps to speed up the body’s metabolism the conversion of food into energy. When we drink water we are helping to maintain the tone of the muscles and skin as well as lose unwanted pounds.
Everyone needs to drink at least 6-8 eight ounce glasses of water each day and more if you are in extremely dry environments or are doing vigorous workouts. Water does not contain any calories and when you drink a full glass of water you tend to feel full, so it is the ideal appetite suppressant.
When you are not drinking enough water, the body tries to hold on to every drop of water in the food you eat. Since your muscles are made up of 70% water, drinking lots of water every day keeps them refreshed and they can flush out the stale water that has built up.
Ice cold water also works better than cool water because the body has to work harder to heat it up, this helping you to burn more calories. Just by drinking 6-8 glasses of water a day, you can actually lose 12 pounds a year.