I was in good shape from Divergent. Damien Chazelle, the director of Whiplash told me, 'Stop Working Out! Don't go outside!' He wanted me pale and doughy. This is the first movie where I shut myself off from the world. It was, by far, the hardest thing I've ever done.

Just go to a bar, watch football - that's fun to me because I've not gotten to see anything because I've been travelling so much. Playing some shuffleboard and some pool and darts. I like kind of dive-y bars.

The makers of '21 and Over' have been screening it, and I'm getting a lot of comparisons to a young Vince Vaughn.

As a drummer, you can't fake the instrument. A trumpet, you could be blowing air; a person who plays the trumpet could still say, "Oh, those aren't the right hand motions." On drums, you have to actually hit them. You can't fake it.

I'm proud of everything I've done. If it's comedy, it's 'cause I think it's funny. If it's a drama, it's impactful. I'm leaning towards dramas now because I wrapped a couple comedies in a row. I don't like watching myself, but it's easier on me when I don't have to carry a lot of the comedy. But I enjoy making comedies but dramas come more naturally.

I'm the type of actor that believes the director has to be in charge. I've been on sets where the actor's ego was the most important thing, and with a director that messes it up. But I don't like a dictator, I want it to be collaborative - the best idea wins. If I feel respected, and I'm going to give that back. If a director wants to try something, cool, I'll give it back. I also feel like they cast me for a reason, so I'm going to make my mark on it... let me do my thing.

I just got an iPhone, which is cool, but I don't download movies, I don't watch Hulu, I don't have Netflix. I don't do any of that. But I do geek out to music.