Senior Airman Elliot Lindsey, a crew chief with the 123rd Aircraft Maintenance Squadron, performs sit-ups during the 123rd Airlift Wing Fitness Challenge at the Kentucky Air National Guard Base in Louisville, Ky., on Oct. 21, 2012. The challenge tested the ability of teams from across the base to complete a timed circuit that also included 80 pushups and a relay race. ( Air Force photo by Senior Airman Maxwell Rechel)

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Photo credit: © RP Photo / Alamy / Afripics
License: Licensed
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