Not to hijack this thread (I didn't go to the gym... went for a 5 mile hike in Estabrook Woods, much better), but I don't know why people go to spin and just, well spin. Some people have been doing this for like 5-6 years. Do they wonder why they don't get fitter or lose weight? I only go to classes where the instructors say "turn it up," not turn it one turn, or half a turn, etc. How much resistance you want is very individual. On the road, I tend to let the terrain do the resistance for me. I don't like to mash, and I see a lot of that in spin, also. So someone telling me a specific amount to turn it up is not going to do me any good. I'm not always riding in the same gear as the person I'm riding with outside, so why would I be inside?
I was a gym rat for sooo long. Now I am losing the will to go. I know that in about 3-4 weeks when it is gray and dark, I will not mind going there after work. But right now, my plan is to be outside as long as I can. If I'm not riding, then hiking, snow shoeing, or X country. But, I need to do some resistance work...