Reply To: Water News › Forums › Nutrition › Ask Nutritionist › Water › Reply To: WaterFebruary 20, 2017 at 10:16 pm #12689 Jennifer DanielsParticipant@jennhosbornKarma Coins: 3 755I drink 100 ounces a day which is more then if I only drank half my body weight but I do one hour of exercise every day. I would go with half the body weight and see how you feel.