Push heavy, no spotter, no fear.
Keep your shoulder blades pinned back, don't let them roll forward as you press.
The chest press machine gives you heavy horizontal pressing with the path and the safety handled for you, so your pecs can work to their limit without a spotter in sight. The fixed handles let you focus everything on the squeeze forward and the stretch on the return, while the triceps assist toward the straight-arm finish. It's the pressing station where beginners groove the pattern and experienced lifters go to failure without consequences.
For chest growth it's a genuine alternative, the machine carries the balance work so your pecs take everything. The barbell still builds more whole-body pressing skill, so let your goal pick, and there's no shame in running both.
So the handles line up with mid chest, around nipple height, when your back is flat on the pad. Handles set too high or low push the stress into your shoulders instead of your pecs.
Your shoulder blades are rolling forward as you press, chasing the handles. Pin them back into the pad, stop the press just before your shoulders peel off, and the chest stays in charge.
