In an interview with E! News in 2018, the actor revealed he went above and beyond to bring the King of Atlantis to life on the big screen.
While talking about the fitness to get into the character, he said he hadn’t really eaten much to stay lean. If he ate, he would get big because he’s a Hawaiian, and genetically if he consumes carbs, it would be difficult for him to get trim. That’s why he had a harder time getting lean for the character. He would rather get big, he added.
I’m Hawaiian—if we eat, we just get big. So, genetically, it’s hard for me to get trim, you deplete yourself of carbs, so I had a harder time getting lean. I’d rather just get big."
He also revealed that once the shooting wrapped, he ate all his favorite cuisines and didn’t touch any weights in nine months. “Every day is a cheat day,” he said laughingly. Also, Momoa said that he doesn’t prefer having abs as one cannot drink beer to maintain it, and Guinness is one of his favorite beers of all time.