Tech. Sgt. David, a 432nd Maintenance Group contract officer representative, performs chest fly repetitions while his trainer, Derrick Chandler, motivates him during a workout Dec. 4, 2015, at Nellis Air Force Base, Nevada. David recently attained his International Federation of Bodybuilding and Fitness professional card, which allows him to compete in professional bodybuilding competitions. (U.S. Air Force photo/Airman 1st Class Christian Clausen)

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Photo by: Airman 1st Class Christian Clausen |  VIRIN: 151204-F-YX485-049.JPG