I kind of peak at how far I can push my body, and then I run out of determination for the habit and start easing off. It's really just a lack of focus and discipline.

I was about 14, and my friend's stepdad asked me to do a 10K with him because his son - who was more into basketball - didn't want to. It was amazing, and I still remember the time I got: 48:23.

It's shocking how sophisticated little kids can be, when it comes to behaving in a professional manner, and that's a credit to their parents.

I'd never heard of the 'Lord of the Rings', actually. So I went to the bookstore and there it was, three shelves of books about Tolkien and Middle-earth, and I was like, 'Holy cow, what else am I missing out on?'

My diet is always terrible, unfortunately. I don't know moderation.

It's just fun to be on a movie set and looking to find the comedy in sweet, simple family moments.

Every day you've got running shoes on, it's a good day.