[hkmurakami]

Nitpicking obviously, but isn't it "too late" if you're drinking when you feel thirsty (it means you're already dehydrated)? Iirc you should be drinking before you feel thirsty.

[zzalpha]

No, that's also a myth:

https://mobile.nytimes.com/blogs/well/2016/05/09/dehydration...

In most cases, thirst is a reliable signal that more water is needed.

[mikestew]

Our evolution has failed miserably if the calibration is that far off. Talk about your ship-stopping bugs.

No, as another commenter pointed out, what you've read is bullshit.

[joncrocks]

Nah, just playing the long game :-)

"If we prioritise for intelligence then they'll eventually just write a bash script, none of this vague hormone and 'feeling' nonsense."

[pharrington]

Adding on to the other commentators, a certain type of headache is a good indication of dehydration.

[donatj]

Too late? I've done that for thirty years and I'm not dead yet.