Joyce, if you want to go here, it should clear up some things for you. It is doing cycling on a stationary bike and the instructor changes it up, making you do different types of exercises. The link can explain it better than I can!
I think it is great everyone is getting involved in this! I haven't gone yet as I am waiting until I lose a little more wait, but once I do, WATCH OUT!
Are you others enjoying it? I really can't wait to start it. :biggrin1: