- Begin on all fours with your hands directly under your shoulders and your knees directly under your hips. Bring your abs to your spine as your bring your left knee and right elbow together under your torso.
- Keeping your torso stable, straighten your right arm and left leg. Reach through your left heel to engage the muscles on the back of the leg and your butt.
- Return to starting position and switch sides to complete one rep.