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Dr. Bob discusses why we yawn

Dr. Bob discusses why we yawn

Adults, children and animals all yawn frequently, but why? Dr. Bob Overholt weighs in some of the possibilities, www.drbobshow.com

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Dr. Bob discusses why we yawn

Adults, children and animals all yawn frequently, but why? Dr. Bob Overholt weighs in some of the possibilities, www.drbobshow.com