Stand on foam with your feet hip-width apart.
Hold your thumb or object out in front of you at eye level. Make sure you can get clear focus on the object. Keep it in focus while you rotate your head from side to side. Move at the highest speed you can while keeping the object in clear focus. If the object gets blurry, you are moving your head too fast. This may make you feel dizzy. Rest if you need to between attempts to allow the dizziness to subside, then return to the exercise. You can repeat this with the head moving up and down, or in a diagonal pattern. Keep feet relaxed on the foam, don't grip your toes to balance. Feeling some sway while performing this exercise is normal.
Note that you can put the foam in the corner so that the walls will provide support if you lose your balance.
