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When you yawn, its because you're a little inactive. When youre not doing anything, you breathe slowly, not letting enough air get to your lungs. So your brain tells you to take a deep breath, which is what we call a 'yawn' -from Taylor (a 12 year old)

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15y ago
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6mo ago

Yawning helps to regulate the temperature of the brain, increase oxygen intake, and decrease carbon dioxide levels in the body. It may also help to promote social bonding and empathy between individuals.

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Q: What does a yawn do?
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