Head still, face forward.

Look to the right and focus on what you see.

Look to the left and focus on what you see.

Look up and focus on what you see.

Look down and focus on what you see.

Repeat two more times.

Imagine a giant figure-eight in front of you on the floor.

Trace it with your eyes for a few minutes.

Trace it with your eyes in the opposite direction for a few minutes.

Hold your thumb as far in front of you as possible and focus on it.

Bring it within a few inches of your face and focus on it.

Repeat five more times.

Find three objects: one that is fifty feet away, one that is twenty feet away, and one that is five feet away.

Focus on each one for thirty seconds.

Repeat five more times.