The Yawning Mystery
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Questions and Answers

Which of the following is a popular explanation for yawning?

  • Yawning cools our brains off.
  • Yawning helps us become more alert.
  • Yawning is caused by a lack of oxygen and excess carbon dioxide.
  • Yawning is a sign of tiredness or boredom. (correct)

    • At what age have babies been observed to yawn in the mother's womb?

  • 11 weeks old (correct)
  • 4 weeks old
  • 6 weeks old
  • 2 weeks old

    • Why do we yawn in groups?

  • To communicate with each other
  • To express boredom
  • To compete for air (correct)
  • To show unity

    • What is one possible reason why athletes yawn before an event?

    <p>To increase their oxygen intake</p> Signup and view all the answers

    What is the purpose of yawning according to some people?

    <p>To cool our brains off</p> Signup and view all the answers

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