Winter seems to do everything it can to prevent us from being active. The cold weather makes you want to just curl up under a blanket and not move until it's warm again. Going out for a walk, run, or bike ride is no longer an option for most people as soon as the temps drop below 40 degrees F. And then the snow hits? Forget about it! People often turn to the treadmill or stationary bike as an indoor alternative but quickly become bored with that. So the end result is to give