You lose water every second. Breathing? Water vapor out your nose. Blinking? Tears evaporate. Even thinking burns through H2O (your brain is 73% water).
That’s why you need to refill. But how much? The National Academies of Sciences recommend about 15.5 cups (3.7 liters) for men and 11.5 cups (2.7 liters) for women daily. That’s from all sources—coffee, soup, watermelon, and yes, plain old tap water.
Here’s the kicker: 20% of your water comes from food. A cucumber is 96% water. A steak? Only 50%. Eat a salad and your glass count drops.
Quirky Fact: Your Pee Color is a Cheat Code
Forget counting cups. Look in the toilet. If your pee is pale yellow, you’re golden. Dark yellow? Drink up. Clear? You’re peeing expensive water for no reason.
Bonus: Fresh lemonade-colored pee is perfection. Dark amber means you’re basically a dried-up raisin. Avoid raisin life.
Your kidneys are screaming for balance. They process about 200 quarts of blood daily. They don’t need a math test from you—just a steady flow.
