eli5: Why does the serious urge to pee not correlate with the amount that comes out

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So sometimes when the urge to pee is really bad it’s bordering on painful, like after a long sleep or car drive, not that much comes out. But then other times when I’m just chilling at home and go for a pee with no urgency I pee like Seabiscuit. What gives? What causes you to need to pee so badly it hurts cuz it doesn’t seem like it’s a volume thing?

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32 Answers

Anonymous 0 Comments

It’s a pressure thing. Your bladder is like a bag with liquid inside, if sit scrunched up and maybe have some other things in your gut, it might be being pressed.

Similar reasons to why pregnant women pee so frequently.

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