So, the answer to “how many oz?” is… it depends. Start at 64 ounces, aim closer to 80 or 100 if you’re active, and always, always check your pee color. You’re not a chemistry experiment; you’re a human being trying not to wilt.
And hey, if you make it to 91 or 125 ounces? Congratulations, you are a hydrated legend. If you only hit 40? Tomorrow’s a new day. No guilt. Just drink a little more and go about your business. Cheers to not being a dried-up prune!