But you do have to start young as a dancer if you're going to achieve the physical skills necessary.
A good dancer is an educated one, so dont abandon school.
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.
Young dancers are training at a very vulnerable time in their lives, through adolescence, and while they are trying to work out who they are as people, never mind as a dancer. So train the whole person, not just the dancer.