Denver Post's says:
This gym is for: serious fitness types who can show up and get moving hard and fast without a lot of explanation. Everyone here was having a good time, but they were focused, and the energy is intense.
Amenities: Cubbies and locker rooms with showers at the training facility, as well as a massage room with therapists who can be booked for an additional fee. Metered and street parking available.
The bottom line: Not only will you workout at your hardest, you will be motivated by regulars and total strangers. Even though the participants are knuckled down and focused, everyone is friendly and encouraging.
The real bottom line: Personal-training sessions, weight training group sessions, unlimited fitness classes and a nutrition program can be bought as a membership. Drop-in classes cost $25 each.