Carol Johnson, 80, works out on a treadmill at a recreation center in Sun City
Carol Johnson, 80, works out on a treadmill at a recreation center in Sun City, Arizona, January 5, 2013. Sun City was built in 1959 by entrepreneur Del Webb as America?s first active retirement community for the over-55's. Del Webb predicted that retirees would flock to a community where they were given more than just a house with a rocking chair in which to sit and wait to die. Today?s residents keep their minds and bodies active by socializing at over 120 clubs with activities such as square dancing, ceramics, roller skating, computers, cheerleading, racquetball and yoga. There are 38,500 residents in the community with an average age 72.4 years. Picture taken January 5, 2013. REUTERS/Lucy Nicholson (UNITED STATES - Tags: SOCIETY)
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