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've always believed that the facts about dancing are more interesting than the myths, and this was a great chance for me to explore how the human body does such incredible things.

Body language is a very powerful tool. We had body language before we had speech, and apparently, 80% of what you understand in a conversation is read through the body, not the words.

I think it's useful to experience other types of dance and other cultures, and the life of a classical dancer these days is certainly not all tutus! So experience of other dance forms is a good idea.

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.

I always recommend a sensible diet, including lots of carbohydrates and avoiding too much fat. Dancers don't need different fuel from other people - they just need more of it because they use more energy.

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