Single-Leg Hip Extension

Lie on your back with your knees bent and feet flat on the floor. Brace your abs while you take your right leg, straighten it, lift it off the floor, and point it straight ahead. Raise your hips so your body forms a straight line from your shoulders to your knees. Slowly lower your hips until they are an inch above the ground. Perform all reps for the right leg and then repeat the exercise with your left leg extended.