TIL yawning is observed in almost all vertebrate animals and is "contagious" across species. There is no consensus on why yawning occurs.
TIL yawning is observed in almost all vertebrate animals and is "contagious" across species. There is no consensus on why yawning occurs.
You're viewing a single thread.
52
comments
reading the title of this post made me yawn lol
welp, i'm glad i wasn't alone
It was the picture for me
It's such a good self portrait.
52
comments