Its fun and exhausting at the same time.
Each class is either 30, 45, or 60 minutes and includes a warm up, variety of, climbs, jumps, sprints, tapbacks, weights, cool down and stretching. The rider is in control of resistance and speed.
The entire class is choreographed to appropriate music, and generally there is a staff member available during the class to assist you if you are unsure of how to complete something (ie: tapback).
Ohh and its in the dark, so you don't have to worry about looking silly!