Being well hydrated is vitally important for us to function at our best. So how much water is enough? According to Dr. F. Batmanghelidj in his book Your Body’s Many Cries For Water, we can calculate the amount of pure filtered water we need daily by taking our bodyweight in pounds and dividing it by two. That will tell us how many ounces of water we need a day to keep our cells functioning optimally. (Weight in kilograms X 0.033 = litres per day.) You may find it helpful to measure your water, or find some way of keeping track of how much you are drinking when you are trying to create this new habit. Juice, soda, and caffeinated beverages do not count, as they are dehydrating to our systems. If your urine is clear to very pale yellow, you are well hydrated. Congratulations!