Quote Originally Posted by jbirdy
the cross trainer is gay, after about half an hour you dont even know you have been on it, go for a run for ten mins and burn it, it will be ten times better for you than an hour on the cross trainer.
: depends on the resistance and whether you are trotting or not :

if you are concerned about damaging the knees are very overweight, want to track time I would say use both machines if not there is no real reason why you can't hit the road.