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A Stationary Bicycle Provides a Low-Intensity Aerobic Workout Exercise bikes, or stationary bikes, offer an exercise that is low-impact. This kind of bike is popular among people who are seeking a cardiovascular workout or those who are undergoing physical therapy, for example knee rehabilitation. All forms of cardio exercises help to burn calories and build muscles. The muscles you train on a stationary bike will vary according to the kind of workout you choose to do. Aerobic Exercise If