These days, starring in a superhero film is like a rite of passage for the top actors in Hollywood.

Whether you’re playing a classic comic character or a new version of a legendary hero, there’s nothing cooler than strapping on a uniform and beating up the bad guys.

For these films, actors are paid to truly own the character—meaning they need to get into the gym to get jacked enough to be a believable superhuman. Hell, real movie stars look good all the time, but when it comes to starring in a comic book adaptation, actors take things to the next level—bulking up to play gods, aliens, villains, and every other sort of big and brawny guy in between.

Here's a look at some of the top muscle men on the big screen and a glimpse into their workout routines to see how they trained to get “super.”