Why Is Yawning Contagious?
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05:46

Why Is Yawning Contagious?

Key Facts In This Video

  • 1

    Yawning and stretching at the same time is called pandiculation. (0:29)

  • 2

    People contagiously yawn less frequently when they have an ice pack on their heads, according to research. (1:51)

  • 3

    Some penguins yawn to attract mates. (4:47)

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