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    Jendrick, Gregg Valentino and Nathan

    Biography

    Gregg Valentino is a columnist for the popular fitness magazine Muscular Development. He has a built-in fanbase from his own website, his column, and as the face of a popular supplement company. Nathan Jendrick is a Certified Fitness Trainer and Sports Performance Consultant, working with clients ranging from bodybuilders to Olympic gold medalists. He is the author of several sports and fitness-related books.

    Books by Jendrick, Gregg Valentino and Nathan


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