Start with your feet shoulder-hip width apart with the barbell above and slightly behind your head. Lock your elbows and keep them locked throughout the exercise. Now complete a parallel squat (thighs parallel to the ground) focusing on shifting your hips back. Push through your heels and sit back. Do not let your heels come off the floor or allow your knees to move forward over your toes. Keep your back tight and squeeze your abs. Maintain an upright 45-degree torso angle throughout the duration of the exercise.