Richard Schachtel was a wonderful guide to yoga. He teaches with the care that is needed for each student to get the most out of the technique and has the remarkable ability to keep the stiff and the limber comfortable in the same class. The Iyengar emphasis on alignment and precision led directly to the kind of body awareness I'd only sometimes achieved in the same postures before. I was able to move my body another step each day, building on the learning of the previous day's class. Highly recommended.