My husband is really inflexible, so I wanted to have him learn some easy yoga poses. SoY has an intro class open to the public on Saturday morning called Sun Salutation, so we went to that class a couple times (now SoY caps free attendance at 3 classes). Although it does not "transform" your body, it teaches some basic breathing techniques, meditation, and yoga poses. I also went to a student-taught class one time, which I quite enjoyed.
I am always impressed by SoY's beautiful facility and feel instantly peaceful whenever I walk inside. SoY does a terrific job promoting and teaching yoga as a way of life and offers opportunities for people to explore before seriously committing to a membership. The class sizes are also quite small from what I have seen, and I have never felt it is trying hard to sell spots and cram people inside the classroom.
Too bad I no longer live in Tempe. Among the things I miss about Tempe, SoY is one of them.