Joseph Pilates' based his concepts of a balanced body and mind on the approach espoused by the early Greeks. His books discuss fitness, health, and include his original exercises that currently sustain a worldwide revolution in fitness strategies and exercise techniques. He has been nothing short of revolutionary in his impact on the world of fitness and exercise. Judd Robbins has spent more than thirty years teaching physical fitness to students across the United States. During more than half of that time, he has specialized in teaching and enhancing the fundamental guidance and instruction of Joseph Pilates. He has multiple certifications in Pilates, yoga, and martial arts from various organizations. Lin Van Heuit-Robbins brings a master's degree in exercise physiology from the University of California, Berkeley, to her regular teachings in Pilates and personal training. Certified by the Physical Mind Institute in Pilates, she is also certified by the American Council on Exercise as both a group instructor and a personal trainer.