The essence of all Aikido technique is the use of total body movements to create spherical motion around a stable, energized center. Even when a technique appears to be using only one part of the body, close observation reveals the Aikidoist's movements are, in fact, total body movements. Properly executed, some techniques are spectacular; sending an opponent flying thorough the air. Others are small, deft movements that immobilize the aggressor. Both results are achieved through precise use of leverage, inertia, gravity, and the action of centrifugal and centripetal forces. Ultimately, it is the energy of the attack itself which brings down the attacker.