I have been working out for a long time now. I am asking this qun. to all fitness pros. bodybuilders. If Front Press worksout the front delts (shoulders) then what does Back Press do ? I generally do back press with barbell.
behind-the-neck shoulder barbell presses work out the same muscles as barbell front press, but it emphasizes the anterior deltoids to a much greater degree than standard shoulder presses because you're doing these presses in an unfavorable position. however, front presses should not be replaced by this as a standard mass or strength builder. i wouldn't recommend doing behind-the-back presses unless you've developed some form of shoulder strength and flexibility. having a spotter to help you on the heavier sets wouldn't hurt it either.
I'm assuming that you mean shoulder press, or military press. From my knowledge, military press is performed in front of the shoulders and shoulder press behind. I also know of many top bodybuilders that will not do the rear shoulder press, or even pull downs behind the neck, as it is arguably bad for your shoulders. If you are pressing or pulling something with your shoulders right back, they are at their maximum range of movement. Military press allows your shoulders to move in a much freer, more natural way. Personally, I'm not convinced that there are any additional benefits to doing presses and pulls behind the neck - you can get all the benefits you want from in front exercises. Don't just listen to me though. Many people still do these exercises and some people swear that they are beneficial.