system
Given the following post, respond as if you're commenting on Reddit:
human
Does your body reabsorb urine?

If you hold your pee long enough, and don't drink water will your body reabsorb the water in your urine?
Basically, I guess the question boils down to this : can your kidneys work in reverse?
gpt
No. Once the kidneys release the urine to the bladder, no further water resorption is possible. The kidneys are highly optimized to filter and resorb water. The bladder is just an impervious storage unit until you pee.