There's a level of confidence in the actor you're working with that really helps a lot. It makes all the difference.

There are occasions when I've pretended to be in a firefight, and then there are people who have really been in a firefight. Clearly it's absolutely ridiculous, and even disrespectful, to suggest that I understand what that is.

I started my career without fans.

I don't ever really sit back and look at roles I've taken and look at any similarities.

But I enjoyed getting sick, I didn't mind it at all. So in that short amount of time, I did actually go from 121 right back up to 180, which is way too fast obviously. And that resulted in some doctors visits to get things sorted out.

I chose to tell a personal story. When you tell a movie like this that's as emotionally charged as this is, it's a risk. As one of my great cinematic heroes, Francis Coppola, would say, "If you aren't taking the highest, greatest risk, then why are you a filmmaker?"

Research can be interesting, but it can be pointless as well. The realities of making a movie often are not conducive with that. I'm not knocking it. I love doing research myself, but I admit it doesn't always add to the performance.