Carl Foster, Ph.D, is a professor emeritus in the Department of Exercise and Sport Science, at the University of Wisconsin–La Crosse. He completed his PhD studies in exercise physiology at the University of Texas at Aust, and has been awarded the distinctions of Fellow of the American College of Sports Medicine (ACSM) and Fellow of the American Association of Cardiopulmonary Rehabilitation (AACVPR). He recently led projects on high-intensity interval training, wearable technology in performance, pacing in sports, and graded exercise testing and training monitoring. He has published more than 500 papers in journals, and serves as associate editor for the International Journal of Sports Physiology and Performance as well as being a member of the editorial board of MSSE. His teaching disciplines include exercise physiology, sports performance and research methods, and his interests include exercise intensity regulation, endurance performance, wearable sensors, and athlete monitoring.