Instructions

1. 1

   Begin on the floor laying on your back with your feet on top of the ball.

2. 2

   Position the ball so that when your legs are extended your ankles are on top of the ball. This will be your starting position.

3. 3

   Raise your hips off of the ground, keeping your weight on the shoulder blades and your feet.

4. 4

   Flex the knees, pulling the ball as close to you as you can, contracting the hamstrings.

5. 5

   After a brief pause, return to the starting position.