Built for Low Impact, they provide a great cardio workouts
The best upright bikes provide invigorating, low-impact exercise whether your goal is rehabilitation, training, or general fitness. Upright bikes are a type of exercise bike that allow you to simply jump on and crank out an excellent session that will get your heart rate pumping while putting far less stress on your joints. The upright position enables you to engage your abdominals, which is something that the sit-down style recumbent bike fails to target. Your upper body including biceps, triceps, and shoulders are also getting put to use while in the upright body position.