Originally Posted by
HIPCHIP
Thirst is not a good indication of hydration as you may be dehydrated long before you get thirsty.
However, some dehydration is to be expected when exercising, and it's rarely a problem. Even though the sports drink manufacturers try to convince otherwise.
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From a biological perspective, it’s hard to imagine that the human body is so delicate that it can’t function properly without scientists (or football stars) swooping in with calculators to tell us how to keep it running properly. 'You have to trust your body,' says Knepper, the National Heart, Lung and Blood Institute expert. Humans have evolved to survive exercising without chugging water or sports drink on some rigid schedule. 'You get clues about what you need if you listen to your own body. You don't have to know chemistry to survive.'"
Excerpt From Good to Go: What the Athlete in All of Us Can Learn from the Strange Science of Recovery, Christie Aschwanden,
https://books.apple.com/us/book/good...n/id1397970427