About a year ago I developed osteoarthritis in my hip.  I use to walk daily but that became very difficult to do. I didn't want to give up my fitness because I've always been one to stay in shape so I started shopping for a stationary bike that would help maintain muscle strength while not having a hard impact on cartilage.  I decided to purchased the Stamina bike because I liked that it was portable and I also liked that it had a gauge telling me how many miles I had biked, the time it took me, and the calories I burned.  It also has a resistance knob so I can make my biking more difficult...