Whilst drinking water to hydrate, how does our body know when to stop drinking and we don’t drink too much?
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It doesn’t in the immediate moment you’re drinking, but your body can regulate water well enough that you would have to drink much more than is comfortable to overhydrate that way.
Over the course of the following minutes, the water is absorbed into your bloodstream, which increases the volume of your blood. Your kidneys detect the increase in volume, up-regulate the amount of water in your urine, and release a hormone that is picked up by your brain that reduces the signal of thirst.
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