I have recently started interval training on a rowing machine. I work out at Lifetime Fitness, and the machine is called "The Liferower 9500" It is a computer based machine, with a 13' screen that kind of resembles a video game, only to win you have to ****ing row! I chose this machine because I have very little patience for doing cardio for long periods of time, and with this machine it kind of makes it a game, so it's easier to do and not so boring. I was wondering if anybody else has ever used this machine, and if anybody has had any success with it.