Cycling will lead to thicker thighs, while calf thickening will not be too obvious. Cycling is a more effective way to exercise, mainly to exercise the muscle strength of the quadriceps, exercise the strength of the thigh muscles, while increasing the stability around the knee joint, to protect the knee joint. For some patients with knee joint diseases, cycling is a better way to exercise, which can effectively enhance the stability of the knee joint, protect the knee joint and prevent knee joint injuries. Therefore, cycling mainly affects the muscles of the thighs and has relatively little effect on the calf muscles. If there is an abnormal growth of the calf muscles, which then causes abnormal thickening of the calf, you must go to the hospital in time to get medical attention and choose the right treatment method after the cause is clear.