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Ron Gutman: The hidden power of smiling


Ron Gutman: The hidden power of smiling
Ron Gutman: The hidden power of smiling
Duration: 7:26

Ron Gutman reviews a raft of studies about smiling, and reveals some surprising results. Did you know your smile can be a predictor of how long you'll live -- and that a simple smile has a measurable effect on your overall well-being? Prepare to flex a few facial muscles as you learn more about this evolutionarily contagious behavior.