Perhaps she was just being friendly.
Anyhow, a good spinning class would kick pretty much anyone's rear. They can be a very good way to exercise. Boring as hell but tiring. That is unless you sit behind an attractive member of the opposite sex wearing lycra.
Right now I do not have the correct equipment for snow riding. Thus I am a wussie. Now if I can ever decide what I want to build so that I can commute in snow............