You think aerobics is not a cool sport? I think you are wrong. It requires amazing discipline - flexibility, fitness, knowledge. And you have to do it with a big smile on your face. Also, I once performed in front of 10,000 screaming women. I tell you something, I'd rather do that than kick a ball around in front of a few men.

When I was a little kid growing up in Iceland, I always dreamed about creating something that could have an impact on the whole world, and even as a young boy I was passionate about fitness and sports.

The worst mistake you can make with children is to talk to them in a condescending, patronising way and think that you can teach them something. You have to understand that it is you who will be learning from them. You have to get into their world and see things from their perspective.