Confidential list of behaviors watched by TSA agents was recently leaked online. A TSA document lists exaggerated yawning as a suspicious traveler behavior. Getty Images — -- Excessive yawning, ...
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New Study Suggests Yawning Cools the Brain
Why do we yawn? Most vertebrates, including humans, yawn or exhibit similar behaviors. Spotted hyenas, which live in groups, ...
A new list says "excessive yawning," "whistling" and "too much laughter" could get you into trouble with airport security agents. Those gestures, along with "disguises," "face pale from recent shaving ...
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