Dr. Simon Marshall trains the brains of endurance athletes and fitness enthusiasts to become happier and more mentally tough. He is former Professor of Family and Preventive Medicine at the University of California, San Diego and Professor of Exercise Science at San Diego State University where he was Director of the Graduate Program in Sport & Exercise Psychology. He has published over 100 scientific articles on the psychology of exercise and has been cited in the scientific literature over 10,000 times. He has served as invited expert on exercise science for the National Institutes of Health, the Centers for Disease Control and Prevention, and the American Cancer Society. He is currently the Performance Psychologist for the BMC Racing team, an elite WorldTour professional cycling team. As the sherpa-husband of professional triathlete Lesley Paterson, he is the founding member of Team S.H.I.T. (Supportive Husbands in Training), and competes in triathlon or cycling events as the husband of Lesley Paterson.