In competitive sports, coaches use a number of tools to influence an athlete’s performance. Diet is certainly one; athletes are placed on regimens designed to maximize muscle growth, fast-twitch response, and stamina. Training routines are formulated with a goal of consistent repetition for a baseball swing, a basketball player’s jump shot, or the quarterback’s throwing motion. And finally, there’s the playbook: the comprehensive guide of what to do and when. It’s a
