Steven Jonas

Steven Jonas, M.D., MPH, MS, is a professor of preventive medicine at the Stony Brook University (New York) School of Medicine. In 2011, he was in his 29th season of multisport racing and had done more than 86 duathlons and 132 triathlons, from sprints to the Ironman distance. He is the co-author of ACSM’s Exercise Is Medicine: A Clinician’s Guide to Exercise Prescription, the official textbook for the American College of Sports Medicine worldwide program, “Exercise Is Medicine.” Jonas has also written or co-written several other books on the topic of multisport racing and more than 10 books on exercise and fitness, weight management, wellness, and health promotion/disease prevention for both academic and lay audiences.