Optimal Muscle Performance and RecoveryBy: Edmund R. Burke, Ph. D. Now in a revised, expanded second edition, Dr. Edmund Burkes landmark book will take any athleteelite or recreationalto new peaks in physical performance. Based on the most recent sports science research, Dr. Burkes R4 System emphasizes the importance of restoring fluids to your body to recover from dehydration replenishing glycogen, a primary fuel source reducing muscle and immune system damage resulting from exercise