Weight and kidney disease have left me feeling less mobile and more tired than usual these days, so I'm looking for a gentle way to add more flexibility. Years ago, I loved dance workouts and never cared much for machines, but I don't have the stamina for that anymore. An old poster here (Vince B) once said that fat people are better off using a well-made bike at a gym than settling for an inferior home model. Planet Fitness, as a chain, seems fat-friendly and inexpensive. What's your take on the experience there? If you go yourself, what machines would you recommend?