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Strengthen Muscles With Stationary Bike Exercise If you do not have the time or desire to attend a cycling class at your gym, you can still enjoy a great workout on stationary bikes. This kind of exercise can help to burn calories, build muscles and even ease arthritis symptoms. One of the primary muscle groups worked during cycling is the hip flexor muscles. This muscle contract during the second part of the pedal stroke, bringing your straight leg to a flexed posture. Strength Training Stationar