[MyHonestOpinon]

Check the ElliptiGo. It gives you a similar feeling without the impact on the knees or hip. I know someone who was an avid long life runner. He substituted running for using the ElliptiGo for years and seemed very happy with it. Surprisingly, he was able to run again. I also have the ElliptiGo, but I don't have knee problems, I started using it because at one time I was having neck pain and couldn't run, bike or swim.

[user____name]

What does it feel like to ride on of those? Versus like a bicycle?

[MyHonestOpinon]

Hard to describe. It is fun, like running on something soft. Whenever I am lazy and stop riding mine for a few months and I get back I am baffled on why I stopped.