But for his starring role in the upcoming Aquaman movie, the actor chose to add even more muscle to his frame. During the Men's Health photoshoot, he waved away the photographer looking for some candid shots - "That's all they want - me with my shirt off!" he says, laughing - before going for it.
For more from Momoa, watch the clip below! "My kids are my greatest piece of art". If I can pump them full of awesome stuff and surround them with lovely art and music, then I'm going to live out my life watching them.
"I want to be remembered as, I hope, an awesome husband and a great father", he shares. "Just f**king off. Wasting time. They're already way smarter and just way better than me".
"There hasn't been a lot time to do that kind of investigating", Bonet said.
Jason Momoa's Aquaman is part of the Justice League
"I really can't tell you what the hell I was doing before I had kids ... Now I'm more focused", he says.
"Standing at an impressive 6'4", the Justice League and Aquaman actor is not someone you'd want to cross in a dark alley, however, chances are that if you did, you'd probably get a bear hug and nothing more.
Though he's changed, Momoa still doesn't see himself as a role model, even if fans do.
Jason, 38, was recently reunited with his family in the US after spending months in Australia filming upcoming superhero movie Aquaman, and he is cherishing the down time he gets to share with his kids because he knows their relationship will inevitably change when they become teens. "I have my ups and downs like anyone", he says.