Dr. James Rosen is Professor Emeritus of Psychology and clinical psychologist. A leader in the field of health psychology, Dr. Rosen has helped hundreds of people in his research and clinical practice to start exercising. His approach to an exercise habit is based on science, but he does not talk psychology from the armchair only. Dr. Rosen relies on lessons from his patients and personal experience as a competitive athlete. Dr. Rosen is the author of the self-help book: “How to make yourself exercise. Creating a lasting habit.”