Cycling can really reduce legs (I think cycling is the most suitable exercise to reduce legs), but the method of cycling is very important. If you ride at a low speed that is half an hour faster than aerobic every day, it will be effective in half a month. However, if you ride a bicycle with a high transmission ratio, the harder you ride, the faster the fat will be converted into muscle, which will make the calf thicker, unable to reduce the leg, and will also cause sports injuries to the leg!