Stand up with your heels and toes touching and a rolled towel between your knees.
The balls of both feet should be elevated onto a board that is about 2 inches high.
Reach up with your arms, palms facing forward. Stick your belly in by pulling in as deeply
as possible with the abdominal muscles. Breath normally.
Bend forward to touch your toes with your fingertips as you squeeze the towel with your
legs. Try to have the knees as straight as possible as you reach down.
Come back upright to the starting position and repeat the movement, keeping the
abdominals pulled in.
Do not hyperextend the knees or change the feet position during the exercise.