Nowadays, many girls begin to practice dancing at the age of six. Although there are many kinds of dance, the basic skills of dance are the same. Some large-scale dances require dancers to practice harder, such as opening the waist, lowering the waist and opening the fingers. These dancers suffered some pains that many normal people can't understand. But whether a person is a dancer or not can also be seen from his appearance, because people who often dance are particularly elegant and soft. For example, Sandy's thin waist is typical.