The king of pressing for boulder shoulders.
Keep your ribs down and core tight, don't lean back and turn it into an incline press.
Pressing a bar from your collarbone to lockout is the fundamental overhead strength move: the delts launch the bar, the triceps finish it, and your entire trunk braces to keep the load stacked over your mid foot. A barbell lets both arms drive one implement, which means more total weight overhead than any dumbbell press. Few lifts give you more upper body return per rep.
Because it is supposed to be. Overhead you are moving the bar with smaller muscles, no bench behind you and a full body balance demand. Progress comes in smaller jumps, so add weight patiently and take the small PRs.
Once the bar passes your forehead, you push your head and chest forward underneath it so the bar finishes stacked over your shoulders and mid foot. Leaving your head back strands the bar out front and kills the lockout.
Standing builds the whole picture, shoulders plus the bracing that supports them, and it is the version described here. Seated with back support isolates the delts and usually lets you press a bit more. If you only pick one, stand.
