Weigh yourself and write down or note your weight.
Take the number of pounds you weigh and multiply that by 2/3.
That is the number of ounces you should drink everyday.
- For example, if you weight 150 pounds, two thirds of that is 100 and that is how many ounces you should drink daily.
- Add 12 ounces of water for every 30 minutes you work out.