I joined the YMCA at 17th and Rhode Island. I think they have other locations, but I believe this is the main one. Classes are included and i have had almost 10 different instructors (but for only two types of classes-bodypump and yoga), and they were all pretty great. I pay $110/mo for a family memebership with a discount for blue cross as my insurance. If you are doing individual, it is probably around $70 w/out discount for a single membership. I joined in Sept and they waived the registration fee. I play racquetball, go to classes, hang out in the sauna for too long, and my wife likes to go there to swim. I highly recommend the Y.