[Illustration]
Hold the right hand edgewise before you, the thumb towards the chest.
Have the fingers closed tightly together and bring the thumb firmly
against the first finger. With a sharp, quick action, open the thumb
away from the finger, so that it points over your shoulder; at the same
time bending the entire hand sideways at the wrist, bringing the thumb
still nearer the shoulder. The movement must be quite snappy to get the
desired effect. Repeat twelve times.
Perform this exercise twelve times with the left hand.