“It was rigorous, but it was great,” Ronan told MTV News of her training process. “I trained for about two months before we started shooting, and I learnt new skills like knife fighting, stick fighting, how to shoot a gun, martial arts. There was a style designed by Jeff Amada, who’s the stunt coordinator, and it was created specifically for the character of Hanna. It was based on the strength and energy and body type and things like that. We worked on that every single day, and I felt like I was starting to walk differently. I’d hold myself differently. I felt stronger, just after a few weeks. It was amazing. It was a great way to focus.”
“I didn’t think I couldn’t do it, but I wanted to do my best,” Ronan said of tackling such an action-heavy role. “I’m a bit of a perfectionist, I guess, so I pushed myself quite a bit. I had a personal trainer to push me quite a bit as well. It was probably the most preparation I’ve ever done for a film, definitely the most physical preparation.”
“I think he held back a little bit, because he was fighting a little girl,” she said. “But I had a little voice in my ear — maybe it was Joe Wright, I don’t know — and he said, ‘Just go for it! Just do it!’ So I went for it. You just gotta do it.”
And don’t expect her to feel guilty about it, either. “It was good fun, kicking the Hulk’s ass!” she laughed.