Kenneth Leung is a physical therapist in the San Francisco Bay Area with more than 20 years of martial arts experience. Kenneth graduated from the University of California, Berkeley, with a BA in molecular cellular biology and received his doctorate of physical therapy from the University of Southern California, where he completed his orthopedic residency. Kenneth draws from his background in sports, fitness, health, and wellness to help people of all levels. He currently works with the University of California, San Francisco, and has a private practice in Oakland. Fitness writer and instructor Lily Chou is the author of The Anatomy of Martial Arts and The Martial Artist's Book of Yoga. She lives in the San Francisco Bay Area.