1. Starting position: Lying on your side with your elbow directly under your shoulder, body in a straight line, with knees bent to 90 degrees.

2. Slowly lift your hips off the floor as far as you can, pivoting at the knee. Do not allow the shoulder to slouch. Exhale through the movement.

3. Slowly return to the starting position.
Note: To make the exercise more difficult, pivot from the feet instead of the knees.