Today I LearnedEnglish • 2 years ago

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

Today I LearnedEnglish • 2 years ago

cross-posted to:
wikipedia

Yawn - Wikipedia

en.wikipedia.org

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El Barto
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English
17•2 years ago
It’s from when caveman wanted to leave their friends cave and go home, but can’t get an ugg in and they don’t want to be rude.

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