Barry A. Franklin is Director of the Cardiac Rehabilitation Program and Exercise Laboratories, William Beaumont Hospital, Royal Oak, Michigan, and Professor of Internal Medicine and Biomedical Engineering, Oakland University William Beaumont School of Medicine, Rochester, Michigan. He is the past Editor-in-Chief of the Journal of Cardiopulmonary Rehabilitation and Prevention and the American Journal of Medicine & Sports, and is a past president of the American Association of Cardiovascular and Pulmonary Rehabilitation (1988) and the American College of Sports Medicine (1999). Currently, he holds formal editorial board appointments with 15 different scientific and clinical journals, including the American Journal of Cardiology, American Journal of Health Promotion, and the American Journal of Lifestyle Medicine. He is also a past chair of the American Heart Associations?€? Council on Nutrition, Physical Activity, and Metabolism. Dr. Franklin and his associates have studied the hemodynamic and cardiorespiratory responses to numerous occupational and leisure-time activities. Other areas of research interest include the primary and secondary prevention of heart disease and the risks associated with sporadic, high-intensity exercise. Dr. Franklin has written or edited more than 500 publications, including 375 papers, 77 book chapters, and 27 books. He lectures extensively, both nationally and internationally, on topic related to preventive cardiology and lifestyle medicine.