Sit in a chair with your head up and your chin out, shoulders
back. Raise your right arm until it is on the level with your
shoulder, pointing to your right. Look around, with head only,
and fix your gaze on your fingers, and keep the arm perfectly
still for one minute. Do the same exercise with left arm. When
you are able to keep the arm perfectly steady, increase the time
until you are able to do this five minutes with each arm. Turn
the palm of the hand downward when it is outstretched, as this is
the easiest position. If you will keep your eyes fixed on the
tips of the fingers you will be able to tell if you are keeping
your arm perfectly still.