When the holidays arrive and everyone is staying up late, people might be yawning more than usual. On average a yawn takes
6 seconds, and some scientists think yawning gives us energy by putting more oxygen into our blood. The weirdest thing is that people’s yawns make OTHER people yawn. Really, next time you’re in a group, try yawning: there’s more than half a chance that someone else will yawn within 5 minutes. And even
your dog might yawn with you!
