What are the various situations under which yawning occurs
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Hey buddy.....
Guttmann and Dopart determined that a yawn causes one of three possible situations to occur: the brain cools down due to an influx or outflux of oxygen; pressure in the brain is reduced by an outflux of oxygen; or the pressure of the brain is increased by an influx of air caused by increased cranial space.
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Explanation:
there are no any main reasons according to science but the scientist says thats its bcz of low oxygen in the body
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