You’ve probably heard the old adage: eight 8-ounce glasses of water a day. That’s 64 ounces total. It’s easy to remember, and it’s not a terrible baseline.
But here’s the thing: that rule came from a very old recommendation that got simplified over time. It’s like the game of telephone, but with H2O.
Think of it as the minimum, not the goal. If you’re sitting at a desk all day in air conditioning, 64 ounces might be plenty. But if you’re running a marathon or just chasing toddlers? You’ll need way more.
