Bought a Groupon & registered. Did a little more research before attending & found that the classes are large, no personal attention or focus on safety or proper technique AND held in an open warehouse type environment. NOT something I want to do in the dead of summer in Phoenix. Canceled before my first class & they already "redeemed" my Groupon so unable to get money back. These BIG BOX classes are a churn & burn. I'm glad I found Topgun Fitness instead.