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Why do we yawn?

Ooh, a yawn is a big, slow stretch for your face and your lungs!

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Pip’s answer

  1. Ooh, a yawn is a big, slow stretch for your face and your lungs!
  2. It might help cool your brain and wake you up a little. Even scientists are still finding out!
  3. And yawns are catching, hee hee! Seeing someone yawn can make you yawn too.

Try it together

Can you do a big, slow pretend yawn with me?

For grown-ups

Scientists still are not certain why we yawn. One leading idea is that yawning helps cool the brain by drawing in air and increasing blood flow. Yawns are also contagious: seeing, hearing or even reading about yawning can trigger one, which may be linked to empathy and social bonding.

Ask your child: Did you yawn while we talked about yawning?

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