So that is not true sorry,everybody is built different and peoples tolerances are not the same.I am 42 and been working out my whole life plus martial arts when I was a lot younger,I bench over 530 lbs and rep out 4 plates without batting a eye humbly speaking,The truth is when you are always humping and then just stop or slow way down is when the body wants to shut down.. Just like a guy who worked his whole life retires and then does nothing but rest all day, that's when the body says I have had enough and it's time to go.I will keep pushing to do more weight up until I hurt myself and then call it quits..
Oh and let's not forget about shoulders my other favorite work out,behind the head military press and not a smith machine almost at 4 plates.I just love it. I am eathier blessed or lucky,and strength is not everything I know I know.I just do it because I enjoy it.
Yea now pump some Iron yea.