I took advantage of the 1 week free pass that Apollo offers via their website to experience some of their group classes. The 3 classes I tried out where GUTZ N BUTZ, AQUA-FIT and GROUP RIDE I was surprised to discover that the Aqua -Fit class was by far the best work out. I guess this is due to the fact that you are using the waters resistence and being sweat-free you can really go for it. All of the classes where lead by qualified instructors with confidence and care. There was a good balance of men and women in each class and plenty of personal space to work out without stepping on someones toes. The hot tub and steam room in the ladies change room was definately a great perk added to this introductory experience.