I first took a class with Aileen when I was 12 or 13.  I picked up in earnest again this past January, and I can tell you, in seven months I feel so much better.  I have flexibility in my hips and shoulders (which makes a BIG difference in my daily life), and I've built a lot of strength.  I probably haven't been this strong, especially in my legs, since the days when I power lifted (squats, cleans, lunges,etc..) The difference is I never dread going to the Iyengar studio, whereas going to the gym to lift more and more weight was always a chore.  After yoga I feel rejuvenated:  the harder the class, the greater the sense of energy afterward.  It's been great.  I've had a terrible lower back since I was 15 and it's finally starting to loosen up.  To put that in perspective -- MRIs, chiropractors, doctors, physical therapy-- none of that worked for me.  Other yoga studios in town simply don't have the experience or expertise that Aileen has.  She takes the time for you to really get it, and to learn and practice doing it RIGHT.  5 stars all the way. -Cameron Robert