I like working with actresses, and I like women a lot, not for obvious reasons, but just in that that there's so much about what they bring to the scene that keeps it so interesting. Their instincts are so different, and they never explain them to you.
— Ryan Gosling
Hollywood usually doesn't have strong woman in films like that, and it's stupid, so for the most part they're usually being directed and written by men.
I have a friend that is a WWII buff, and we sat and talked a lot about stuff like the war and the reasons behind it, and you now it's all in the uniform. Once you're in it, it usually does all the work for you.
I did put on weight for the last half of the film, but the Ferris wheel scene was shot with a harness on me so that if I fell I wouldn't fall all the way.