It's not about weight, it's about fitness, and one component of being fit is to have relatively low body fat, because fat is not very efficient, whereas muscle is.

I have lots of interests, but it's true that dancing is a very full-time job.

Because muscle is heavier than fat, dancers weigh more than you might think, but they are usually very lean.

As you get older, the physical abilities decrease, which is particularly frustrating because your brain gets so good! So as you are becoming less technically or physically able, younger dancers are emerging who need the space to perform.

Young dancers are training at a very vulnerable time in their lives... So train the whole person, not just the dancer.

At the moment I'm enjoying a new challenge at the Royal Opera House, but I'm also keen to pursue my interest in television and particularly in science.

It's not magic! It's physics. The speed of the turn is what keeps you upright. It's like a spinning top.