This is a low back exercise for the stability ball...Lay on your stomach with arms and legs extended, secure the ball between ankles. Lift one or both arms as you lift your legs to exercise the lower back. Other variations: can do exercise without the ball, lift opposing arm and leg (without ball), change tempo, but pause at top of movement (before returning to mat) to get maximal contraction of low back muscles.
If you have any questions, please email me!
Renette