So you don't really need 8 glasses of water a day! It's an idea that's been around for almost 200 years and surprisingly, no one revisited it seriously until recently.

Quoted: A recent editorial in the Journal of the American Society for Nephrology is getting wide press coverage for debunking the so-called "8x8" theory—the popularly held belief that drinking eight 8-ounce glasses of water daily helps remove toxins, improve skin tone, and increase satiety, among other health benefits. The authors chalk up the belief to folklore.