190116-F-OT290-0291
U.S. Air Force Staff Sgt. Patricia West, 52nd Command Post senior emergency actions controller, relaxes after a powerlifting workout at Spangdahlem Air Base, Germany, Jan. 16, 2019. Physical exercise, such as lifting weights, damages muscle fibers and creates a feeling of soreness, but during rest periods muscles have time to recover in stronger formations and increase in size. (U.S. Air Force photo by Airman 1st Class Jovante Johnson)