I'm a runner and lifter, pretty much exclusively. I always kind of looked at everything else as being second rate compared to either, and unless I was out rowing my 12' john boat around, I didn't see much point to getting on a rower. Even after long actual rows, I'll still run. Today, I ripped a toenail and a good amount of my pinky toe off (by accident, of course). Blood everywhere...nasty! Obviously - not good for running, and today was a run day. Not wanting to miss a workout, I figured I would warm up to something else and just go extra hard at it and see what happened. So, I went for the rower as I will not be caught dead on a stair climber or elliptical. Turned the resistance all the way up as it felt a bit light. All I can say is, "damn!" That was a great workout! I'm really pleasantly surprised, and honestly, I've been hoping to add the same kind of diversity to my cardio as I have introduced to my lifting over the years. I may never quite get that same level of stimulation, but just one more option has me pretty excited. I can feel a lot of work in my abs, back and legs already. Something they weren't used to doing! Any other converts out there or just folks who use a rower with some workouts or goals to share?