Dancers need a good sense of body awareness to feel or know where their body is in space so they can accurately place arm, foot, leg and whole body positions. They need to navigate around other dancers without bumping into them.
Young dancers often want to know when they can start pointe work. And an answer of around 12 years of age is usually given. But really it is not the age of the dancer that we need to pay attention to but the kind of dance student that is asking.