I know that most humans can get to 300lbs on the bench if they train properly. I've done it myself, years ago. I am wondering if most humans can get to 400lbs on the bench or if it's one of those things that is out of reach.

I know guys who have trained for years and can't get even close. Now chances are they didn't train properly blah blah blah so it is unknown to me if they had real limits or just improper training.

What do you think?