When a child learns to throw a ball, motor neurons fire in a synchronous manner to perform the physical action. The process of motor learning is dependent upon repetition and interpretation by the movement control center of the brain (the motor cortex). Over time, the synchronization of motor neurons firing becomes more efficient and effective (Hebb, 1949). For synchronization of motor neuron firing to occur, repetition of the action must be precise (Kottke, 1980). From an athlete training for speed and accuracy to a deconditioned elderly individual improving balance, this process is the same.