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> If you need oxygen, then you need sleep!

Would this also correlate with the desire to yawn? I always heard that yawning was a response to needing more oxygen.

It has nothing to do with oxygen; Yawning is caused by other people yawning in the vicinity.

Of course not. Sympathy yawning is a thing of course, but have you never yawned by yourself with no one around?

This isn’t the case for my dog or infant.

They remembered a yawn