Lifestyle Health Fitness How Jason Momoa Added (Even More!) Muscle for 'Aquaman' Jason Momoa worked with a trainer to add even more muscle to his already-buff arms for his role in Aquaman By Julie Mazziotta Julie Mazziotta Julie Mazziotta is the Senior Sports Editor at PEOPLE, covering everything from the NFL to tennis to Simone Biles and Tom Brady. She was previously an Associate Editor for the Health vertical for six years, and prior to joining PEOPLE worked at Health Magazine. When not covering professional athletes, Julie spends her time as a (very) amateur athlete, training for marathons, long bike trips and hikes. People Editorial Guidelines Published on November 14, 2017 09:03AM EST Comments As anyGame of Thronesfan is distinctly aware of, Jason Momoa is already incredibly buff. But for his starring role in the upcoming Aquaman movie, the actor decided to add even more muscle to his frame. The dad of two worked with trainer (and mountaineer) Mark Twight to come up with a training plan that would bulk up his chest and incorporate Momoa’s love of rock climbing. That, along with fight training to help him wield Aquaman’s trident, prepared Momoa for the role and maintain his 230-lb. body, which he discusses in Men’s Health‘s December cover story. Damian Bennett Momoa’s aware of the public fascination over his body, even if he doesn’t always enjoy it. 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. Damian Bennett Because more than his body or a role, Momoa wants to be known as a good person. “I want to be remembered as, I hope, an amazing husband and a great father,” he says. “My kids are the greatest piece of art. If I can pump them full of amazing stuff and surround them with beautiful art and music, then I’m going to live out my life watching them. They’re already way smarter and just way better than me.” Damian Bennett “I want it to be the greatest thing I ever do: make good humans.” Damian Bennett Momoa says that since becoming a dad — he has an 8-year-old and a 10-year-old with wife Lisa Bonet — he’s better to his body. “I really can’t tell you what the hell I was doing before I had kids … Just wasting time. I think I was pretty reckless and definitely a bit out of control. Now I’m more focused,” he says. “I probably love myself more and take care of myself more because I want to stick around.” Damian Bennett Though he’s changed, Momoa still doesn’t see himself as a role model, even if fans do. “I’m a degenerate too, you know? I have my ups and downs like anyone,” he says. “All I can do is be me.”