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Why do I yawn when I feel bored or tired?

DWQA QuestionsWhy do I yawn when I feel bored or tired?
Anonymous asked 1 month ago
1 Answers
CCHRC answered 1 month ago

There are several theories as to why people yawn but no one knows exactly why. Here are a few theories:

  • Yawning cools the brain
  • Yawning helps to draw more oxygen into the blood and drive carbon dioxide out of the blood
  • Yawning stretches the lungs and lung tissues, loosens up your muscles and joints, and wakes your body up

References:
https://kidshealth.org/en/kids/yawn.html
https://www.webmd.com/brain/news/20110923/why-we-yawn#1