Exercise 4: Side Plank
Lie on your right side with your knees straight. Prop your upper body on your right elbow and forearm, which should be directly below your right shoulder. Place your left hand on your left hip. Try to make your tummy as skinny as possible and hold it that way—this gives you a tight core—while breathing normally. Then raise your hips until your body forms a straight line from your ankles to your shoulders. With your core tight, hold this position for 30 seconds. Roll onto your other side and repeat.