Exercise has powerful effects on mental health. This therapist guide, and the accompanying workbook, provide an indispensable resource for practitioners who wish to expand their therapeutic range to include exercise-based interventions. A wealth of data shows the efficacy of these interventions for the treatment of mood and anxiety disorders, cognitive enhancement, and resilience training, including resilience training applied to the control of habit disorders like smoking. This therapist guide provides a step-by-step accounting of the benefits of exercise, the application of exercise to specific conditions, recommended exercise dose and durations, and, perhaps most importantly, motivational strategies to help clients get to and succeed with exercise. Fully revised and updated to capture the latest research in the area, this new edition also expands the content of the first edition to cover exercise for cognition, resilience, and smoking. Introductory chapters provide general guidance on strategies for initiating and maintaining exercise and are complemented by chapters devoted to the specific application of exercise to mood disorders, anxiety disorders, the enhancement of cognition, and for general resilience as might be applied in a relapse-prevention phase of treatment.