ELI5- When you’re really thirsty, and drink warm water – it doesn’t feel good. But when you drink cold water- it feels like heaven. Why?

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I had kept my metal bottle in the car which was parked in sunlight for long hours. I got into the car and I was parched so I drank that warm ass water and it didn’t feel good and it took me 7-8 big sips to actually feel like i drank any water.

In: Chemistry

16 Answers

Anonymous 0 Comments

Wait wut?
When I’ve been working outside I want a tall glass of room temp water. You can’t chug cold water, it hurts.

Anonymous 0 Comments

I’m not even a subject matter amateur, much less an expert, but possibly a contributing factor? I’ve read we don’t have dedicated moisture sensing nerves – our bodies use cold sensing nerves (and some others?). It’s not the most accurate sometimes. Maybe cold water results in higher activation of a “there is water” response.

I googled it to see if there’s any evidence. It seems easily provable/disprovable. Couldn’t find any, but there’s a previous thread that says it is psychologically, but not physiologically, more hydrating.
https://www.reddit.com/r/askscience/s/OkhPUbCV9Y

Anonymous 0 Comments

I think cold water is more dence,thus more thirst quenching than warm water which has lighter feel because of the scattering of molecules

Anonymous 0 Comments

This is a learned response, in cultures that don’t drink cold water, they do not feel the same response.

You have come to associate drinking cold water with being able to take a break from, or the end of, whatever physical exertion you were undertaking. That association is where the “feels like heaven” part is coming from.

Anonymous 0 Comments

Cold water tastes different. Being cold masks impurities or bad flavors (such as an metallic taste).

Cold water also stimulates more saliva. The saliva moisturizes your mouth in a way that water doesn’t. So cold water is more thirst-quenching. Related: acid like lemon juice does the same thing.

Anonymous 0 Comments

My wife seems to think that it is incredibly bizarre that I just don’t like cold water, at all, under any circumstance. Is it really that strange?