However, not only does basketball require a high intensity level from the anaerobic energy system, it also uses the other energy system, the aerobic system, almost just as much. In contrast from the anaerobic system, the aerobic system does require oxygen.Players have to repeatedly generate momentum and overcome inertia with frequent starts and stops” (Drinkwater, 4). In order to perform the demanding tasks need to play basketball, the body must rely heavily on the anaerobic system. The anaerobic system is an energy system that does not use oxygen.