Please tell me if you are talking about the explosiveness of the dance moves or the feeling of power in the muscles. I feel that tightening is very important, in the dance to learn to control their nerve endings, the hand has a hand shape, in the dance to keep it, the hand is the body's nerve endings, must be connected to the body. The foot is to tense the foot groove foot and so on, as far as possible with the leg line coherent, the foot as an extension of the leg.