Your body is basically a whiny, honest roommate. If you get a headache around 2 p.m., it’s probably not because your boss is annoying (though that’s possible). It’s likely dehydration. Same with dry lips, feeling foggy, or suddenly craving a nap—even after your third coffee.
I remember a summer day when I skipped water to “be more productive.” By 4 p.m., I was staring at my keyboard like it was a puzzle box. One glass of water later, and I suddenly remembered how sentences work.
When Life Makes You Drink More (or Less)
You need more water if you’re sweating—like after a run, a hot yoga class, or carrying groceries up three flights of stairs. Also, if you’re eating fiber-heavy foods, or if you’re pregnant or breastfeeding—your body’s running a marathon back there. And let’s talk alcohol: for every glass of wine or beer, you’re basically asking your body to trade one glass of water for it. Not fair, but that’s the deal.
On the flip side, if you’re sitting in an air-conditioned office barely moving, you might not need a full gallon. You’re not a camel crossing the desert; you’re a human in a chair.
How Much Water Should You Drink A Day For A Healthy Body - Scoopify