Why does pee becomes harder to stop once you started peeing?
In: Biology
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I don’t think the real ELI5 is here yet.
Your pee works on a pressure system. Your sphincter is a valve holding that urine back. But once the valve opens, the pressure differential between your bladder and the outside world opens… the flow must go on. You can close that valve, but you are fighting against the flow of urine. It’s certainly doable, just harder and not what it was designed to do (as there would normally be no biological need to manually stop peeing). Like others have said, you can strengthen and “train” that muscle. Source: I’m in the water industry 😀
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