well the bodybuilder bench press is known for making shoulders hurt, it's hardly a natural movement to bring the arms that far back with the a 90 degree angle between the upper arm and side of the upper body. I'd say it's like asking why your back hurts if your doing heavy deadlifts with a bent back, it's just not the way you're supposed to do the lift
(unless you're bald, 300-400lbs, and like bent back training to strenghten your back
)
And about leg drive, I always assume it's a powerlifter bench press. Anyways, you should use leg drive no matter the goal, IMO. The reason I say this is because leg drive also helps you keep tight; it has a lot to do with stability, which is always a good thing.
And lastly, even if flaring your elbows does increase the recruitment of the pectorals, it's hardly worth sacrefising good shoulder health. A lot of people get big pecs from PL bench press, and if that doesn't work, there are other exercises better suited. Bench press is about a lot more than just pecs.
(unless you're bald, 300-400lbs, and like bent back training to strenghten your back
And about leg drive, I always assume it's a powerlifter bench press. Anyways, you should use leg drive no matter the goal, IMO. The reason I say this is because leg drive also helps you keep tight; it has a lot to do with stability, which is always a good thing.
And lastly, even if flaring your elbows does increase the recruitment of the pectorals, it's hardly worth sacrefising good shoulder health. A lot of people get big pecs from PL bench press, and if that doesn't work, there are other exercises better suited. Bench press is about a lot more than just pecs.