Why is the “64 ounces per day” guideline best treated as a starting point rather than a strict rule?
The “64 ounces a day” guideline is best treated as a starting point because hydration needs aren’t one size fits all. As Keri Glassman puts it in our Alloy content, 64 oz is “a little bit of a myth”, some people need more and some need less. It’s still a useful target because it’s simple to remember and, honestly, most people aren’t drinking enough in the first place.
At Alloy, we also talk about hydration in the context of GLP-1 medications. In Month 1 of our Weight Care program, we recommend at least 64 oz daily because GLP-1s slow gastric emptying, which can raise the odds of constipation and dehydration, and because hydration can support appetite regulation, digestion, and headaches. That’s exactly why it’s a baseline, if you’re on a GLP-1 you may find you need to be more intentional about fluids, and some people will still need more than 64 oz depending on their day and their body.
If you want to go deeper, these are helpful: - Alloy Weight Care Month 1 (includes the 64 oz guidance and the GLP-1 constipation angle): - Hydration Myths & Basics with Keri Glassman (where she explains why 64 oz is a goal, not a rule): - The Importance of Hydration - Keri Glassman (same idea, different video):
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