Martin, Curtis

Jimmy PeNa, MS, received his master's degree in clinical exercise physiology from the University of Texas at Tyler in 1998. He then published his thesis summary on the effects of endurance training on muscle size and strength in competitive athletes in the renowned journal "Medicine & Science in Sports & Exercise". PeNa served as the fitness director for "Muscle & Fitness" and "Muscle & Fitness Hers "magazines, and for more than a decade wrote and edited thousands of articles on training and fitness, making him one of the nation's most published fitness experts. In 2006, PeNa designed the wome...