If you really want a rounded number: most adults need about 0.5 gallons (64–80 ounces) per day, adjusting for activity and climate. That’s not a gallon—that’s a half-gallon. Think of it as a friendly half-gallon of milk, but without the lactose and with more health benefits.
For active folks, maybe 0.75 gallons. For marathon runners or people doing yoga in a sauna, maybe a full gallon. But for you, sitting here reading this article? You’re probably fine with less. Stop worrying, and start sipping.
What If I Hate Water?
First of all, you monster. Just kidding! Water is boring. Add a splash of lemon, some mint, or a few berries. Infuse it, don’t force it. You can also drink sparkling water—just check for added sugars (we don’t need a soda habit disguised as hydration).
There’s even a thing called “hydration snacks”—like popsicles! Eat a popsicle, drink a glass of water. It’s a win-win, especially if it’s 90 degrees outside and you’re wearing shorts.
