MAYO CLINIC MINUTE: HOW MUCH WATER SHOULD YOU DRINK? [NOTE: THE RECOMMENDATION IS WOMEN SHOULD DRINK 91 OUNCES (THAT IS, 11.3 GLASSES) OF WATER PER DAY AND MEN SHOULD DRINK 125 OUNCES (THAT IS, 15.6 GLASSES) OF WATER PER DAY. ***A REGULAR WATER GLASS HOLDS 8 OUNCES OF WATER***].