Master Gunnery Sgt. Todd Kirby, a technical control engineer at Marine Corps Forces, Pacific, goes through the motions of a rock-paper-scissors game as many times as possible during a brain training session at the Navy College Office aboard Joint Base Pearl Harbor-Hickam, July 1, 2015. The Armed Services YMCA of Honolulu hosted three instructors from the Brain Performance Institute of the Center for BrainHealth at the University of Texas at Dallas, to teach a free class to eligible service members and civilians. ( Marine Corps photo by Kristen Wong/Released) Brain class helps keep fit


Master Gunnery Sgt. Todd Kirby, a technical control engineer at Marine Corps Forces, Pacific, goes through the motions of a rock-paper-scissors game as many times as possible during a brain training session at the Navy College Office aboard Joint Base Pearl Harbor-Hickam, July 1, 2015. The Armed Services YMCA of Honolulu hosted three instructors from the Brain Performance Institute of the Center for BrainHealth at the University of Texas at Dallas, to teach a free class to eligible service members and civilians. ( Marine Corps photo by Kristen Wong/Released) Brain class helps keep fitness IN MIND 150701-M-TH981-002


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Photo credit: © PJF Military Collection / Alamy / Afripics
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