And then there’s us. The classic advice: “Drink eight 8-ounce glasses a day.” That’s 64 ounces. But why? Because someone said so? Actually, the National Academies of Sciences recommends about 3.7 liters (125 ounces) for men and 2.7 liters (91 ounces) for women from all sources (yes, food counts).
But here’s the kicker: your actual need changes daily. Did you sweat at the gym? Drink more. Did you eat a big salad? That’s water. Are you running a fever? Double your intake. And if you’re hungover? Oh, honey, you need to chug like your life depends on it, because it kind of does.
So how do you know if you’re getting enough? Check your pee. It sounds crude, but it’s the best indicator. Pale yellow? Perfect. Dark, like apple juice? Drink up. Clear like water? You’re probably overdoing it, which can actually flush out your electrolytes. Yes, you can drink too much water.
How Much Water Your Body Needs According To Your Weight? - Healthy