The Complete Guide to the Flat Machine Press: Setup, Cues, and Programming
The single most common mistake on any pressing station happens before the first repetition begins. Lifters leave the seat wherever the previous person set it, sit down, and begin pressing with their elbows flared at 90 degrees. This mistake shifts the load away from the chest and places the supraspinatus tendon directly between the acromion and the head of the humerus.
Correct seat height adjustment is non-negotiable. Lower or raise the bench until the machine handles align horizontally with the bottom edge of your pec line, roughly level with your nipples. When your hands sit in this position, your humerus naturally tracks below shoulder level during the eccentric stroke. This keeps the subacromial space open, preserving rotator cuff safety through the deepest stretch.
Once the seat is locked, your upper back foundation dictates your pressing mechanics. Implement active scapular retraction cues: pull your shoulder blades down and back, imagining you are pinching a pencil between your rhomboids, and plant them firmly against the back pad. Drive your feet into the floor to create whole-body tension. Keep your rib cage elevated throughout the set; collapsing your chest at the bottom of the movement instantly rolls your shoulders forward, dumping pure shearing stress into the anterior deltoids.