The Mystery of Yawning

Animals yawn

• True

• False

All humans yawn

• True

• False

Select all of the things that yawn.

• Babies before they are born

• cats

• table

• Babies after they are born

Do people yawn to get more oxygen?

• Yes

• No

People yawn the most when they are

• excited

• happy

• tired

Yawning wakes people up.

• True

• False

Do people yawn more when their brains are warm

• Yes

• No

• We don't know

Yawns are contagious.

• True

• False

Children don't catch yawns until they are ______ years old.

• 3

• 2

• 4

• 5