POPPING, also known as mechanical dance, is a type of street dance. The most basic element of POPPING is POP, which refers to the effect of vibration through rapid muscle contraction and relaxation, generally including arms, legs, chest, shoulders and necks. Sometimes Waving (current) is also integrated into the scope of POPPIN by current dancers. Today's POPPIN has no distinction between Old School and New School. They are all dances belonging to Street Dance.