With age, you see people fail more. You see yourself fail more. How do you keep that fearlessness of a kid? You keep going. Luckily, I'm not afraid to make a fool of myself.

It's absolutely physically demanding to play the role of Wolverine. There's a lot of action, and I try to do as much of it as I can because it's better for the audience.

When lifting, I'm always with a trainer because the thing that makes a difference is that last 20% in your training, and he very scientifically looks after my food as well, because when I'm going for a 'shirt off' shot, everything changes the month before, and I'm timed down to the day.

I love New York ... I think it's the best city in the world. As far as cities go, everything's there. I think it's so vibrant. I love the people, I think they're honest, in your face. If they don't like you, they'll say, 'Get out of my way,' if they like you they'll slap you on the back and support you. It's a very intoxicating environment to be in.

My father is a real idealist, and he's all about learning. If I asked for a pair of Nikes growing up, it was just a resounding 'No.' But if I asked for a saxophone, one would appear and next day and I'd be signed up for lessons. So anything to do with education or learning, my father would spare no expense.

The most scared I'd ever been was the first time I sang at a rugby match, Australia versus New Zealand, in front of one hundred thousand people. I had a panic attack the night before because people have been booed off and never worked again... just singing one song, the national anthem.

I tended to favour the piano over the guitar because it stays in one place, which is what I like to do.