Peter J. Fitschen, PhD, CSCS, is the owner of FITbody and Physique, where he works full time as a contest prep coach. His combination of education and experience are unique in the sport of bodybuilding. He has a PhD in nutritional sciences from the University of Illinois, a master’s degree in biology with a physiology concentration, and a bachelor’s degree in biochemistry from the University of Wisconsin at La Crosse. As a researcher, Fitschen has coauthored 18 peer-reviewed publications, including several directly related to bodybuilding contest preparation. He is certified as a strength and conditioning specialist (CSCS) through the National Strength and Conditioning Association. He has been competing in natural bodybuilding since 2004 and won his natural pro card in 2012.

Cliff Wilson is a professional natural bodybuilder and one of the top physique coaches in the industry, having established himself through his work with competitive bodybuilders and powerlifters. Using a combination of scientifically proven methods and experience-driven techniques, Wilson’s clients have amassed over 100 pro cards, more than 60 professional titles, and 9 world championships. His reputation as a coach has also allowed him to become a noted fitness author, with articles published in dozens of magazines and websites. Wilson is also a noted guest speaker who has given lectures around the world.