As babies we are 75 to 80% water, but as we grow older this decreases to to as little as 55%. The more we stay hydrated, the younger we will look and feel. Water is necessary to carry toxins out of the body. Ever notice when you drink a lot of water, your skin is clearer? Drink 8 ounces of water 8 times a day and you'll stay hydrated. Drink a bit more and your skin will look that much better. Drinking water in the morning is especially important if you haven't had any water all night. Drink 2 glasses of water when you first wake up, and drink an extra cup for each cup of coffee or tea you drink to compensate for their diuretic effect: they take water out of your body. I think my skin looks best when I drink 10-12 glasses of water a day.