Kelly McGonigal, Ph.D., is an award-winning instructor at Stanford University in Palo Alto, CA, where she teaches yoga, psychology, and healthy back classes. She is a leader in the field of mind-body science and she provides teacher trainings and continuing education for yoga, fitness, and health care professionals. McGonigal is editor-in-chief of the "International Journal of Yoga Therapy" and a frequent writer for publications such as "Yoga Journal" and "IDEA Fitness Journal".