Saturday, August 24, 2013

Human News

Hallucinations and Yawning
The woman did not recognize many of the tunes that dogged her, but they had full vocals and instrumentals.
You've probably seen someone yawn and felt compelled to take a deep inhale and exhale yourself. Yes, yawning is contagious, but why do we actually do it in the first place? Trace takes a look at the competing theories out there.

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