About ten years ago I was being treated by a physical therapist for a tight hamstring I had developed due to running. “Have you ever tried yoga?” She asked. “There are lots of great stretches that would be really good for you.” Intrigued, I went home, found a yoga class at my gym, and dutifully walked through the door. we reclined on the ground on thin mats, closed our eyes, directed to be still and listen to our breaths for several minutes. “Where’s the stretching?” I though