i purchased 3 classes to this studio through Groupon. The first class I took with Alli, and I really enjoyed it. My arms were so sore the next day, I could barely brush my own hair. The next class I took, the instructor did not seem like she wanted to be there, and had no encouragement for me, other than, "No, you're doing that wrong" (umm, sorry? i'm new to this) I still haven't gone back as I don't want to take my third class with anyone except Alli, and her schedule just hasn't jived with mine.