Why do we yawn?

  • Yawning
  • Reflexes
  • Oxygen levels
  • Contagious yawning

Yawning is a reflex that helps regulate the body's oxygen and carbon dioxide levels. It can also be triggered by boredom or fatigue. The exact cause of contagious yawning is still unknown.

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Editorially reviewed Julia (October 2, 2023)
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Answered Jimmy (October 2, 2023)

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