In order to maximize the tension on the pectorals during an exercise, it is important to use proper positioning. The lifter should start by lying on their back on a flat bench with their feet flat on the ground. From this position, they should arch their back and drive their heels into the ground. This will create a slight incline in the bench and help to keep the lower back from rounding. Next, the lifter should take a shoulder-width grip on the barbell and retract their shoulder blades. This will help to ensure that the bar is kept over the middle of the chest throughout the lift. Once the lifter is in position, they should take a deep breath and brace their core before pressing the barbell overhead.