1. You have to stretch your body. Always ask your ballet instructor if the class will stretch out together. Stretching is very important in ballet. It is used to loosen and strengthen muscles and to lengthen your posture. Stretching is vital and it has to be done before you begin each ballet class session and before a ballet performance. If you avoid stretching, you are at a higher risk of injury during class. Always stretch after the class is ov...