Firstly, burning fat is an all-body process, and you can't target where you lose weight. Energy is delivered to the muscles via the bloodstream, NOT from being absorbed from surrounding fat stores. An arm bike won't do anything about arm fat.
The legs (and the thighs in particular) are the largest and most powerful in the body, and exercise involving the legs will tend to burn more calories. With the arm muscles being smaller, an arm bike won't burn as many calories or get your heart rate as high.
However, for those with mobility issues, arm bikes can be an excellent way to get in cardio.
The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.
| current weight: 178.0