Little known fact: you can enjoy a high-energy ride on a real bicycle indoors (without ruining a shred of carpet, to boot). All you need to do is bring your own bike to one of WattsUp Cycling's high-intensity classes and hook it up to a state-of-the-art CompuTrainer, which locks the bike in place and allows for stationary pedaling. Unlike gyms that line their floors with stationary pedal apparatuses that neither look nor feel like the real thing, WattsUp Cycling believes it makes more sense to train on the same equipment you'll be riding and racing with outside of the studio. This way, when you hit the pavement or trail dirt, you won't have to waste time or energy re-acclimating to your trusty two wheeler. WattsUp Cycling even offers an at-home program that allows participants to pipe in studio classes via the internet.