Side Bridge

How to perform

1. Lie on one side with your legs straight and stacked. Prop yourself up on your bottom forearm, with your elbow directly under your shoulder and your forearm flat on the floor pointing away from your body.
2. Lift your hips off the floor so that your body forms a straight line from your head to your feet. Your top arm can rest along your side or extend toward the ceiling.
3. Brace your core and hold the position for the prescribed time, breathing steadily. Do not let your hips sag or rotate toward the floor.
4. Lower your hips to finish the set, then switch sides to train the other oblique.