How much water do I really need? We have heard for years that 8-10 glasses a water a day is right. But I ask you, 'How can that be when you have a 5'4" woman who weights 115 pounds and a 6'4" man who weights 250 lbs?'.
The rule of thumb to remember: 1/2 your body weight in ounces. That is right, you need to drink daily, half your body weight in ounces. So if you weigh 150 lbs, whether you are a man or a woman, you will need 75 ounces of water daily.
OH but wait... that is not all... IF you are a caffeine drinker you need to calculate your water intake a little differently. For every ounce of caffeine you take in, you will need to replace it with 2 of the same measurement of water. AND that water will NOT count toward your daily water intake.
Do your brain a favor... Hydrate your body well.