OAKLAND, CA - JULY 15: Seniors perform a Tai Chi demonstration during the 8th Annual Healthy Living Festival on July 15, 2011 in Oakland, California. An estimated 2,000 senior citizens from Alameda ... more 
OAKLAND, CA - JULY 15: Seniors perform a Tai Chi demonstration during the 8th Annual Healthy Living Festival on July 15, 2011 in Oakland, California. An estimated 2,000 senior citizens from Alameda County attended the 8th Annual Healthy Living Festival that features fitness demonstrations along with educational and resource booths that promote successful aging and healthy living. (Photo by Justin Sullivan/Getty Images) less 
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Getty Images | Photo By Justin Sullivan / Getty Images
Fri, Jul 15, 2011 3:21 PM EDT