how smiling changes our blood vessels and brains....


Ron Gutman: The hidden power of smiling | Video on TED.com
www.ted.com
TED Talks 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