Since you body can only adsorb water at a certain rate, chugging water if you are dehydrated does little good.
I mean, some of it is stored in the stomach, but oftentimes you will need to urinate soon after drinking late amounts of water.
How does the excess water get transferred to the bladders quickly if it isn’t adsorbed by the body?
In: Biology
When you take in water, it’s absorbed through your intestines and stomach. Some is used to expel waste from the kidneys, some is used to provide water to the body’s chemical processes that need water as an input, some is used to dilute your stomach acid so it doesn’t burn through your stomach lining, etc. It’s shuffled off to where it’s needed.
When you take in excess water over a short time, that extra water is discarded, essentially. Sent to where it’s needed, then the excess to your bladder through your kidneys. The same happens with water soluble vitamins taken in excess, they’re discarded and you pee them out. The body regulates itself and knows how much water is needed. This process can be pretty fast, as too much water building up can cause problems.
You expel water through other means too, not just pee. Your breath contains tons of water (it’s why clouds form when you breathe out in cold weather!), your sweat, your saliva (if you spit), etc are all ways of discarding extra water.
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