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Dear Student,

Our body induce yawning to drawn in more oxygen or remove a build-up of carbon dioxide. Our brain needs oxygen to function properly and when it does not get sufficient oxygen ( a condition when we feel drowsy or sleepy), we yawn to gather a large amount of oxygen for our brain, to help it function faster and control drowsiness.

Hope this answer will help you.

Cheers!

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Dear Student,

One is that when we are bored or tired, we just don't breathe as deeply as we usually do. As this theory goes, our bodies take in less oxygen because our breathing has slowed. Therefore, yawning helps us bring more oxygen into the blood and move more carbon dioxide out of the blood.

Regards,
Priya Agrawal.
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Our body induce yawning to draw in more oxygen or remove a build up of carbondioxide......
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