Start by sitting straight up on a bench and hold a long barbell across your shoulders. Plant your feet on the floor with your knees bent at 90 degrees. Grip the bar, hands wider than shoulder-width and palms facing forward. Brace your core and squeeze your shoulder blades together, keeping your elbows under the bar. Exhale and press the bar straight up, lining it up with your head. Pause. Inhale and slowly return to the starting position.