The chapter explores the concept of utilizing variability in training to prevent arm injuries in baseball pitchers by conditioning the body to tolerate stress rather than restricting it mechanically. It emphasizes the importance of movement variability in distributing stresses differently to reduce injury risks and advocates for a return to a more balanced approach to training, gradually increasing workload and avoiding excessive high-intent throwing. The discussion delves into techniques like long toss, the role of ground forces, and the benefits of diverse training methods in enhancing performance and maintaining arm health in pitchers.