system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:ELI5: If "yellow" colored urine is a sign of dehydration, why does the body get rid of that liquid instead of using it to hydrate me?
gpt
*Because that is exactly what the body is doing which is why the urine is yellow!*

Your body needs to get rid of waste on a regular basis. This is excreted into the bladder for periodic release. The waste products need to be carried in a fluid, but as our bodies dehydrate they try to hold onto water. As a result the waste products are more concentrated in the remaining water and the color darkens.