20 best cities for staying young

POSTED: 08:47 AM PDT Apr 27, 2012    UPDATED: 10:26 AM PST Feb 21, 2013 

Want to be forever young? Find out where you should be living, according to RealAge.

Young - San Diego
18 / 20

3. San Diego -- Sun-drenched San Diego is the best city for exercise. It's also third best for optimism and fourth best for not smoking.

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