Deborah Bull

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 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.

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.