Stand with your feet hip-width apart, and place your hands at the back of your head with your elbows opened wide.
Pull your abs to your spine, and keep your back neutral while pressing your butt backward, hinging at that hips, until your back is almost parallel to the floor. Keep a slight bend in your knees as you bend forward.
Return to standing, squeezing your glutes when you are upright. This completes one rep.