The player exercises his brain and eye muscles with the following exercise. Fixate on the thumb of the right hand with the arm extended.

Perform an upward rotation to the right, keeping the arm extended and focusing on the thumb. Return to the starting position. Now rotate to the right.

Keep your arm stretched and fix your gaze on the thumb. Return to the starting position. As the third level, the player turns downwards to the right. Ensure that the arm remains stretched and the thumb is firmly in view.

Perform two repetitions on the left side after two initial repetitions.