Just treadmill, but since I was super full, it was on a lower speed I try and change things up and build stamina but walking on the highest incline setting for as long as I can. Sometimes if I have enough energy, I'll do a bit of a run. I've never been the type to run long distances, so I do it a bit at a time. I hate the bikes because the standing up ones hurt your butt. The sitting bikes can be nice if you want a very lazy workout, and to build muscles in your legs/knee ligaments (I have week joints).