Martin Schwellnus is a full professor of Sport and Exercise Medicine at the Faculty of Health Sciences, University of Pretoria in South Africa. He is a specialist sports and exercise medicine physician who regularly consults with athletes of all levels. He holds an MBBCh from University of the Witwatersrand (cum laude), a M.Sc. (Med) from University of Cape Town, and an M.D. (equivalent to a PhD) degree from University of Cape Town, and is a fellow of the American College of Sports Medicine. Prof Schwellnus is the Director of the Sport, Exercise Medicine and Lifestyle Institute (SEMLI) at the University of Pretoria, has been the Director of the International Olympic Committee (IOC) Research Center in South Africa for the last 12 years. He is the President of the College of Sport and Exercise Medicine of South Africa and a longstanding member of the IOC Medical Commission (Medical and Science group). He is a member of the editorial board of several international journals including the British Journal of Sports Medicine. He is a Medical Consultant to numerous national and international athletes and teams and has an interest in several areas in sport and exercise medicine notably the health benefits of regular exercise, the prevention and management of injuries, and prevention of medical complications in active individuals. He promotes the safe prescription of regular exercise to all populations in order to reduce the global burden of non-communicable disease. He is an active researcher with an H-index > 45, and has published over 400 scientific journal articles, chapters in books and conference proceedings.