Awareness of the importance of exercise and physical activity to optimal physical and mental health has never been greater. It is widely acknowledged that physical inactivity is a leading cause of death, yet statistics show less than 50% of Americans participate in regular physical activity. This information highlights the public health challenge of increasing participation in physical activity to enhance physical health and to buoy the psychological benefits associated with physical activity. The Oxford Handbook of Exercise and Psychology is an authoritative and comprehensive presentation of the breadth and depth of empirical contributions utilizing state-of-the-science theories and approaches in exercise psychology. Chapters are authored by leading investigators across the globe who have made significant scientific contributions addressing the behavioral aspects of physical activity. Sections of the book address the effects of physical activity on mental health; knowledge gathered utilizing psychobiological perspectives; behavioral factors that impact exercise motivation; scientific contributions addressing the physical activity benefits with special populations, including individuals with physical disabilities, older adults and cancer patients; and promising areas for additional investigation. Each chapter presents a summary of scientific advancements in the topic area as a foundation for future investigation. Fueled by a broad range of disciplines and interdisciplinary approaches, the field of exercise psychology is growing, and this comprehensive handbook will be the perfect resource for students, researchers, and physicians interested in exercise motivation and the mental health benefits of physical activity.