Spinning is a kind of strong aerobic exercise, and aerobic exercise has a good fat-reducing effect.
When doing aerobic exercise, the human body will first decompose the sugar reserves in the body to supply energy, and then mobilize the fat in the body as an energy supplement. The body's mobilization of fat is not local, but the whole body. As long as the body involves reducing fat, it will definitely reduce the subcutaneous fat of the arm-even if the arm doesn't feel very tired.