Stewart T. Cotterill is the Head of the School for Health and Rehabilitation at Health Sciences University and a Professor in the Psychology of Human Performance. He is a HCPC registered sport and exercise psychologist and a BASES-accredited sport and exercise scientist. He has over 25 years of experience in working as a sport and performance psychologist across a wide range of performance domains, including professional and Olympic sport, the performing arts, business, the military, medical professions, and eSports. Stewart has worked with multiple teams across a broad range of sports, including football, cricket, and rugby. He has also undertaken significant research relating to leadership and captaincy in sports teams. In addition, Stewart was the inaugural editor for the journal Case Studies in Sport and Exercise Psychology and has been on the editorial boards of several other journals.