It is possible for your legs to get thicker when you ride a bicycle every day. Many patients practice cycling for the initial purpose of making their legs thinner, and in fact this exercise can make them thinner. The reason why the legs have become thicker is because the patients themselves are not exercising in the right way. Whether a patient’s legs will get thicker or thinner depends largely on how long the patient rides and how fast or slow he or she rides. For example, if the patient exercises every day, the speed of riding is faster and the distance of riding is shorter, at this point it will cause the patient to do anaerobic exercise often. After that, the muscles of the patient’s lower limbs will be more plump, so that the legs will become thicker. And if the patient exercises every day, the riding distance is longer and the riding speed is slower, the continuous exercise will make the lower limbs do aerobic exercise. In the long run, it will make the lower limbs become more slender, with obvious muscle lines, and more coordinated. At this point, the legs will look thinner on the outside. Patients who want to make their legs thinner in this way must ride for a long time and not ride too fast.