I'm going to try to try to try spin classes this winter. I did one the other day, and I survived. 60 minutes of very loud music with someone shouting directions I could barely understand over the noise. However, there was some motivation to being with others - most of whom could not fix a flat if their life depended upon it, if they even have a bike. We have supposed "disinfectant" which everyone faithfully uses by wiping the machinery before and after the activity, and I end up sort of "doing my own thing." I am by far the oldest person in the class, but that doesn't bother me much.

I also regularly do swimming, walking and pretty intense resistance exercises and targeted stretching.