Do you guys think there is an optimum strength ratio between muscles groups or lifts? In other words, if you can lift X amount of weight should you ideally be able to lift that same weight in an opposing lift? OR, would it be prefferable for opposing muscles to have the same strength? Like your biceps and triceps for example? I think I read somewhere that one of the best way to prevent sports injuries is for opposing muscle groups to be of equal strength. Another thing, do you think this translates into body building in any way?