TIL yawning is observed in almost all vertebrate animals and is "contagious" across species. There is no consensus on why yawning occurs.

en.wikipedia.org

cross-posted to:
wikipedia

572

TIL yawning is observed in almost all vertebrate animals and is "contagious" across species. There is no consensus on why yawning occurs.

en.wikipedia.org

@bhmnscmm to

Today I LearnedEnglish • 1 year ago

cross-posted to:
wikipedia

Yawn - Wikipedia

en.wikipedia.org

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Flying Squid
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2•1 year ago
Fair enough.
- @[email protected]
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