I think many improperly load overhead lifts. Because the muscles surrounding the shoulder joint are often stronger than the present stability of the joint (due to copious amounts of flat pressing exercises) athletes are capable of handling significantly higher loads than they probably should without first following a normal progression leading up to the heavier loads. As indicated above, the 'avoid what hurts' philosophy is always helpful.
i understand that, but since we are not training weightlifters do u think the risk is worth them doing snatch and jerk with 80-95% i think i have some of the shoulder problems i have now from doing behind the neck spilt jerk with 315+ in my younger days, thats just one example.