Frédéric Delavier is a gifted artist with an exceptional knowledge of human anatomy. He studied morphology and anatomy for five years at the prestigious École des Beaux-Arts in Paris and studied dissection for three years at the Paris Faculté de Médecine.

The former editor in chief of the French magazine PowerMag, Delavier is currently a journalist for the French magazine Le Monde du Muscle and a contributor to several other muscle publications, including Men's Health Germany. He is the author of the best-selling Strength Training Anatomy, Women's Strength Training Anatomy, The Strength Training Anatomy Workout, The Strength Training Anatomy Workout II, Delavier's Core Training Anatomy, and Delavier's Stretching Anatomy.Delavier won the French powerlifting title in 1988 and makes annual presentations on the sport applications of biomechanics at conferences in Switzerland. His teaching efforts have earned him the Grand Prix de Techniques et de Pédagogie Sportive. Delavier lives in Paris, France.

Jean-Pierre Clémenceau, a graduate of Etat, is the fitness coach of the stars. He has worked with legendary actresses, including Charlotte Gainsbourg, Emmanuelle Béart, and Academy Award winner Juliette Binoche. He has trained numerous French personalities using an approach based on positioning and breathing. He is also the author or coauthor of a number of books related to fitness and health, including Delavier's Stretching Anatomy.