Book excerpt: It is beyond dispute that physical activity is good for us, but what are the benefits, challenges and impacts of sport on health? This is the first book to focus on football in the context of health from individual, public and population-level perspectives. Football as Medicine examines the effects of football training on the three main types of fitness (cardiovascular, metabolic and musculoskeletal) and on specific target populations (for example, children, type 2 diabetes patients, cancer patients, people with mental health conditions, the socially deprived and older people). It discusses the significance of football for public health and assesses the efficacy of football interventions by clubs and community sport development programs. With its multi-disciplinary approach, this is a valuable resource for students, researchers and practitioners working in physical activity and health, public health, health promotion and medicine, as well as football and sport business management, sport and exercise science, and the sociology of sport.