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Old 08-13-2019, 02:38 AM
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Normal strength soda, coffee, and tea and not "net negative hydration". They aren't as hydrating as, say, plain water, but you can live indefinitely on any of them. There may be issues with added items like sweeteners, cream, etc. due to calories or sugar content, but all of them provide sufficient hydration. Your body adjusts to the slight diuretic effect and overcomes it.

Really concentrated sources of caffeine like "shot" energy drinks? I don't know, never looked into that myself.

Last edited by Broomstick; 08-13-2019 at 02:40 AM.