How much water do YOU need in one day? Every body is different, and 8 cups for one person may be just too much (or not enough) to the next. Drinking water daily according to your body weight is a great way to get the amount of water that you need, rather than following the classic 8 cups a day rule.

To factor how much water you need daily, the math is simple. Simply take your weight, divide that by 2, and take that ending number and that is how many ounces of water you should have per day. To make the math a bit easier, simply take that divided number and divide it again by 8 (there are 8 ounces in a cup) and that is how many cups of water you should have per day for your personal body weight.

For example- I weigh 85 pounds. 85 divided by 2 is 42.5. Therefore, I need 42.5 ounces of water a day. How many cups is that? I simply take 42.5 and divide it by 8, as there are 8 ounces in a single cup. 42.5 divided by 8 is 5.3. So I roughly need about 5 and a half cups of water daily for my body size. Sure beats 8 cups, which for me seems like quite a lot!

I learned this simple math in High School, and it’s stuck with me for years. Since you can actually drink too much water and overtax your kidneys, and along the same line you can actually drink too little water and leave yourself dehydrated, this equation is a great way to determine the best amounts of water each person should have daily for overall health. It’s a lot better than the classic 8 glasses of water a day for maximum health.

Sources:

mayoclinic.com

some chemistry teacher in High School

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