Want massive, Arnold Schwartzenegger-worthy shoulders? Well, you'll have to work for it, but they're achievable with a few strategic exercises. Building muscle, especially big muscles like the deltoids, requires heavy resistance.
Check out this video to learn how to do seated curl-bar shoulder presses. Yes, they're a bit hard to do, but we promise you will build large deltoids within just a few weeks if you keep up the work.
This movement is great for building up your shoulders. Make sure you get the head back out of the way and drive the bar up and down through the middle of your spine.
Also be sure to try the alternate grip with your palms facing inward. This grip may feel slightly awkward at first, but we promise you that it will hit your shoulders in a very unique, effective way.