Why do we yawn? @MysterySci
Why do we yawn? @MysterySci
Uploaded April 2019 | Updated September 2026, 13 hours ago
Are your kids wondering: “Why do we yawn?” This question came from Subah, a 3rd Grader from the US. Like, share and vote on next week's question here: mysterydoug.com/vote
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Mystery Science |

Why do we yawn?

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