First of all, the elliptical machine is a very good aerobic exercise equipment, which protects the knee joint much better than the treadmill. Secondly, under the condition of constant diet balance, increasing enough elliptical exercise time, such as 40 minutes to 1 hour every time, 4~5 times a week, will definitely reduce fat. Theoretically, if you lose weight as a whole, you will lose fat in your legs. However, there is no way to lose weight by stovepipe exercise alone.