Preparation
1. Lie supine on a stability ball (ball under low back)
with knees bent at a 90-degree angle. Place feet flat
on floor with toes shoulder-width apart and pointing
straight ahead.Allow back to extend over curve of
ball. Cross arms across chest.
Movement
2. Draw abs in and activate glutes.
3. Slowly crunch upper body forward, raising shoulder
blades off the ball and tucking chin to chest.
4. Slowly lower upper body over the ball, maintaining
a drawn-in position.
5. Repeat as instructed.
6. To progress, perform as a long-lever exercise.