I just got a cheap folding pedaller today, for rehab of my knee cap that I broke in March. I spent about 10 minutes with it this afternoon. My physical therapist suggested that I get a "step through" recumbent bike to minimize my odds of losing my balance and falling off, but I've got a tiny apartment. I'm in lousy shape, and I can't walk as far or as fast as I did before I broke my knee. This will have to do until (if) they let adults back into the YMCA.