The girl's toe was tied tightly to the board with cable ties.Her feet can't turn, or her toes will sharp pain.The board was covered with conductive tape.Her hands were suspended by a rope.The rope is not tight. It only serves as a balance.The electrode pieces of the remote electric shock massager are connected to her body and the board respectively.When the trainer turned on the remote switch.She could only stand on tiptoe, or her body will be electric shocked.This was a wonderful training idea.The girl was exhausted at last.