"Every woman has body worries, and I'm not exempt from that. But part of the by-product of spending that much time in the gym is that you can fit into a cat suit," contactmusic.com quoted her as saying.
Johansson's spy character in the superhero movie is very fierce, and the screen beauty had to work very closely with her stunt-double Heidi Moneymaker to get her fight scenes right.
"The idea is that Moneymaker and I become one and we can start and finish each other's moves and everything in between. And it's a lot of training and dedication and it hurts and it hurts and it hurts and then suddenly it doesn't hurt and you're getting it right and it's a great moment - you feel like you've accomplished something big," she said.