With a stationary bike though if you ever feel like working out even in the middle of the night you can just hop on. Right after you can go to bed. And also you don't have to worry about having to slow down because people are around. It would be good to have both. If I had to choose only one I'd go with a real bike but only cause it's more fun, if my objective was to only lose weight I would want a stationary bike. But stationary bikes that can take a lot of weight can be quite costly.