Jean Couch—author of The Runner’s Yoga Book, producer of the DVD Your Pain-Free Life, and founder of Balance Center—started her career by studying healthy populations of people throughout the world. She learned that they tended not to experience back and joint pain as pervasively as does the United States population. From her studies, Couch believes that this pain can be eased with correct posture. She and her instructors animate that research at Balance Center by leading sessions based on the movement patterns of people without back and joint pain, just as adults who want to look cool base their movements on the angsty slump of teenagers. The teachers lead introductory, ongoing, and intensive classes in posture correction for sitting and walking.