Bodies are different, and in the end you have to figure out what works for you, empirically. But my experience is, if I drink a lot of water all at once, say, two liters, I’m suddenly a lot less thirsty (go figure), I start needing to pee a lot for an hour or two, and in three or four hours, I’m back to being thirsty. But if I drink a liter every two or three hours, the water lasts me longer without me getting parched.
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