[rwfromkansas]

We just got one. Does it work well to really beef up the heart? I want to lose weight, but that is something I really want as well.

[E. Pluribus Unum]

It's as good a cardiovascular workout as you can get. You get out of it what you put into it.

RPMs is a lot more important than resistance. Too much resistance will tear up your knees. Spin at 100 RPMs at any resistance and I guarantee your heart-rate will be above 150 within five minutes.

I have found that if I hold the handlebars with my arms out in front my back hurts over time. I found, for myself, that I am better off holding my arms close to my body. No strain on the back that way.

[Bloody Sam Roberts]

Does it work well to really beef up the heart?

Only if you use it on a regular basis.