Why Do People Yawn When They’re Bored or Tired?

Yawning is like a big, open mouth stretch that makes you feel more awake or more sleepy. Sometimes, when you see someone else yawn, it feels like your body wants to join in, and you start yawning too!

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Examples

You watch your little brother yawn after lunch and suddenly you feel drowsy too.
Your teacher yawns during math class, you start yawning in the middle of an equation.
At the end of a long movie, you see people around you yawn, soon everyone is yawning.

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Categories: Health · yawning· contagious behavior· sleep· brain function