Dr. Aaron L. Baggish is the founder and Emeritus Director of the Cardiovascular Performance Program (CPP) at the Massachusetts General Hospital in Boston, MA, USA. The CPP, an affiliate of Harvard Medical School, was the United States’ first program designed to provide comprehensive cardiovascular care to elite and recreational athletes. He is now professor of medicine at the University of Lausanne’s Institut des sciences du sport (ISSUL) and chief of sports cardiology at the Centre Hospitalier Universitaire Vaudois (CHUV). He has served as medical director for the BAA Boston Marathon and cardiologist/team physician/medical consultant for numerous organizations including the World Anti-Doping Agency (WADA), FIFA, FIFPro, National Football League (NFL) Player’s Association, Major League Soccer (MLS) Player’s Association, US Olympic/Parolympic Training Centers, US Soccer, US Rowing, New England Patriots, Boston Bruins, New England Revolution, and universities.