Jordan D. Metzl is a sports medicine physician at the Hospital for Special Surgery in New York City. He specializes in non operative sports medicine, with a focus on injury prevention, endurance training, and performance optimization for athletes of all levels. Metzl is the author of several fitness and health books, including The Exercise Cure and Running Strong, which combine clinical guidance with training programs. He is also known for his public education efforts on musculoskeletal health and for hosting endurance events that promote community fitness and injury prevention.