Mysterious Times

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Why We Yawn

The human body exhibits many unusual behaviors, and foremost among them might be the yawn. An involuntary reflex that serves no clear purpose, yawning can sometimes seem like one of those strange physiological quirks that should’ve been phased out by evolution. But despite appearances, yawning actually has a very logical scientific explanation.

read more Why We Yawn | ClickHole.

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This entry was posted on November 20, 2014 by in Funny.

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