I did the new treadmill thing today. It's strange, it has "treadles" that move up and down independantly. So there are two treadmill tracks and they alternate up and down. So it's kind of like an eliptical or climber while also being a treadmill. It took some getting used to and I never really did get a good rhythm going. Running on that thing would be exceedingly difficult. It was a good workout though.