Patricia Walden is one of America’s foremost yoga teachers. She has been studying and teaching Iyengar for over 25 years, and is cofounder of the B. K. S. Iyengar Yoga Studio in Somerville, Massachusetts. She serves on Yoga Journal’s editorial advisory board and is frequently featured in Yoga Journal articles. She is also the instructor of numerous yoga videos, some of which are the best selling videos on the market. One of them has sold over 1 million copies in 1999 alone, according to Billboard magazine. She travels and teaches yoga all over the world.