This is my erg- short for ergometer. I have had her for 16 years now. And, she has no idea what she's in for the next two years. I don't dig running on a treadmill very much- nor riding a stationary bike. But, for some reason, I am just fine sitting on this thing, visualizing myself on the water, and just rowing- meter after meter. Which is a damn good thing because along with swimming, biking, and running, I am going to be putting some serious time in on her- building up my endurance.