Here’s where it gets interesting: your actual need changes faster than a chameleon. If you worked out and sweat buckets, you need more—typically an extra 12 to 20 ounces for every 30 minutes of exercise. If you live in a hot climate, your body is basically a leaky faucet, so you’ll need to drink more.
Calculate Water Consumption
Also, pregnant or breastfeeding women need extra—around 80 to 100 ounces total daily. Your body is literally making fluids for another human, so yeah, that’s a big deal.