Written for the upper-level undergraduate and graduate-level courses in exercise psychology and behavioral physical activity, Psychology of Physical Activity and Sedentary Behavior, Second Edition focuses on the psychological effects of physical activity in a diverse array of populations. It emphasizes how physical activity needs to be paired with a reduction in sedentary behavior in order to achieve overall health. With a focus on both the psychology of exercise and sedentary behavior, this first-of-its kind text provides readers with the latest research in both areas, including coverage of sleep, pain, and delayed gratification. This text also applies a critical lens to foundational theories and incorporates applications and interventions throughout.