It’s been a great week for Superman fans. After the latest trailer for Man of Steel, anticipation has been at an all-time high. Today, we’re adding more fuel to that fire. Michael Shannon, who plays General Zod in the film, recently spoke to ScreenCrave while promoting The Iceman. The actor discussed his Man of Steel experience, which he describes as very physical.

On prepping for the role:

Michael Shannon: That was fun. Zack Snyder is an amazing person, a really beautiful man, a lot of fun to work with. You would think it would be a very high pressure environment with all the money flying around, but Zack keeps it very down to Earth. With Zack it’s a very physical approach. He wants everybody to be in on the physical side of things. That’s how you start it. You work with a trainer, you do the workouts, you do the stunt training… You do that for a few months and it was an interesting — I’ve never had a job like that before that was way into it, and I enjoyed it. I actually liked it a lot more than I thought I would, which is weird because I spent months where I was working on practicing karate chips and stuff and suddenly one day I had to say a line of dialogue. I was like, ‘Oh, right! That’s what I do. Right.’ I thought I was a bodybuilder.”

On who’s the most ripped on set:

Michael Shannon: Henry Cavill is the most ripped.

On working with a green screen:

Michael Shannon: I didn’t mind it at all. I mean, what’s the alternative? Because anytime there’s a green screen mean that whatever is supposed to be there is impossible to make. It’s supposed to be like the cosmos or something, so I might as well stare into a green screen than a black poster board with little holes punched out. Then I would feel silly.

Man of Steel is directed by Zack Snyder from a screenplay written by Davis S. Goyer. The film opens in theaters June 14.

Additional reporting by Melissa Molina.