To perform at their best, dancers need to consume adequate calories, carbohydrates, protein, fat, vitamins, minerals, and fluids to fuel their training. The document recommends dancers consume 45-55 calories per kilogram of body weight daily, with carbohydrates making up 55-65% of calories to replenish glycogen stores. Adequate protein, fat, and micronutrients are also important. Staying hydrated by drinking fluids regularly is essential to prevent fatigue and optimize performance.