Wikipedia @lemmy.world Plum @lemmy.world 7mo ago Yawn en.wikipedia.org Yawn - Wikipedia 1 crossposts Today I Learned @lemmy.world bhmnscmm @lemmy.world 2y 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 /wiki/Yawn
TIL yawning is observed in almost all vertebrate animals and is "contagious" across species. There is no consensus on why yawning occurs.
