In the past 30 years, Dr. Kabat-Zinn’s eight-week out-patient mindfulness-based stress reduction (MBSR) program has spread from the University of Massachusetts Memorial Medical Center to hospitals and clinics across the United States and around the world and occasioned an entire field of clinical medicine and basic and clinical research, much of which has already demonstrated the profoundly positive mental and physical health consequences of practicing mindfulness meditation both formally and informally in one’s daily life. The practices in The World of Relaxation are guided meditations similar to the formal practices in MBSR, particularly mindfulness of breathing, body sensations, thoughts and emotions; and the body scan.