# yawning and shaking

**URL:** <https://boards.straightdope.com/t/yawning-and-shaking/39784>\
**Category:** Factual Questions\
**Created:** [November 5, 2000, 5:14am UTC](https://boards.straightdope.com/t/yawning-and-shaking/39784 "2000-11-05T05:14:09Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ubermensch](https://avatars.discourse-cdn.com/v4/letter/u/bcef8e/32.png) [@ubermensch](https://boards.straightdope.com/u/ubermensch)\
**Post date:** [November 5, 2000, 5:14am UTC](https://boards.straightdope.com/t/yawning-and-shaking/39784/1 "2000-11-05T05:14:09Z")

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sometimes when i yawn i shake, involuntarily. but i’ve never taken notice at the time if i’m cold. all i know is, i just did it, and i’m not shivering. but it’s chilly.

is there a reason that this happens, or is it a mystery on the level of why we yawn?

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**Author:** ![Wonko\_The\_Sane](https://avatars.discourse-cdn.com/v4/letter/w/258eb7/32.png) [@Wonko\_The\_Sane](https://boards.straightdope.com/u/Wonko_The_Sane)\
**Post date:** [November 6, 2000, 12:49am UTC](https://boards.straightdope.com/t/yawning-and-shaking/39784/2 "2000-11-06T00:49:28Z")

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I do this too, but not for every yawn. It feels like a shiver, but it’s not a cold-induced shiver. I’m curious too.

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**Author:** ![Qadgop\_the\_Mercotan](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/qadgop_the_mercotan/32/83_2.png) [@Qadgop\_the\_Mercotan](https://boards.straightdope.com/u/Qadgop_the_Mercotan)\
**Post date:** [November 6, 2000, 1:53am UTC](https://boards.straightdope.com/t/yawning-and-shaking/39784/3 "2000-11-06T01:53:17Z")

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Some medical experts feel its related to the famous “piss shiver”, and it’s about as well understood