Lie supine on bench. Dismount barbell from rack over upper chest using wide oblique overhand grip.
Lower weight to neck to upper chest. Upper arms will be perpendicular to torso. Press bar until arms are extended. Repeat.
Upper arm travels in perpendicular path to torso to minimize anterior deltoid involvement and mimics upper arm positioning of Chest Flies. The oblique grip (hand positioned with palm diagonal on bar) allows elbows to be more easily turned outward to each side. Also see Bench Press Analysis.