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Superfit is written by Royce Gracie and published by . It's available with International Standard Book Number or ISBN identification 1931229333 (ISBN 10) and 9781931229333 (ISBN 13).
Gracie has teamed up with Strom, fitness coach for Keyshawn Johnson, and Serena Williams, to create a customized program for martial artists. This program of strength training, cardiovascular routines, flexibility exercises, and nutrition includes step-by-step workout plans for beginner, intermediate, and black-belt practitioners.