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.
Deborah BullBecause muscle is heavier than fat, dancers weigh more than you might think, but they are usually very lean.
Deborah BullYoung dancers are training at a very vulnerable time in their lives... So train the whole person, not just the dancer.
Deborah Bull