Place your body face down on an inverted bench or hyper extension bench, make sure your feet are either locked in or in someway stable, place your hands either behind your head or in front across of your chest keeping your legs straight bend over head towards the floor until your upper body is vertical, raise your upper body back up until you are in full alignment.
Lie facedown on a back-extension bench with your heels under the footpads and your hips resting on the bench. Your body straight and your hands crossed over your chest. Lower your torso by bending at the hips to form an angle at your hips that approaches about 90 degrees. Use a smooth motion to rise back up to the starting position.Focus on pushing your ankles into the ankle pads and pulling your torso up using your hamstrings and glutes.