One girl climbs on the board and starts jumping on it. She isn't heavy as she weighs 60 kilos, so nothing special happens. Then our other friend spontaneously runs up and lies down with a board. The girl jumps from one board to the next. To make it more interesting, we suggested that the new guy try it with four girls on top of him. Their combined weight is 300 kilos. Its hard enough for him with two on top, so will he manage with four? Time: 6.25 min.