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» Scarleteen Boards: 2000 - 2014 (Archive) » SCARLETEEN CENTRAL » Bodies » Why does my body shudder when I pee?

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Author Topic: Why does my body shudder when I pee?
luanne
Activist
Member # 48638

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Right after I'm done urinating, I get a single huge spasm mostly through my torso and thighs. It's involuntary, but it's not uncomfortable like hiccups or cold-shivering. What's going on?

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Stephanie_1
Scarleteen Volunteer
Member # 36725

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That's a question plenty of people have asked and there's no clear answer to yet. There are two theories though 1) It's like any other shiver (when you're cold) because you expel a warm liquid thus your body tries to rewarm from the loss, and 2) It's a reactions of the Autonomic Nervour System (because when you need to urinate and hold it in, your ANS sends signals to hold it even though there's bladder contractions - so the change from hold to release from the ANS causes the shudder.

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"Sometimes the majority only means that all the fools are on the same side" ~Anon

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