Bicycle crunches are a great way to strengthen your core and build abs. This exercise targets the muscles in your abdomen and obliques, helping you build a strong core and enhance your overall strength. Bicycle crunches are also a great way to increase flexibility in your lower back and improve posture. Bicycle crunches are an effective workout for building core strength and toning the abdominal muscles. They can be done as part of a full-body workout or as an isolated exercise for targeting the abs specifically. With regular practice, bicycle crunches also help to improve balance and stability in the body.