The facilitator must make small balls out of any available material (crumpled paper) or use available balls (tennis). Participants split into equal teams, and each team forms a line. The first person in the line passes the ball under their legs to the person behind them. The last person from the line, after he/she receives the ball, runs to the front of the line and repeats the same, until the person who started the activity comes back to the front again. If the ball drops, it has to be returned to the beginning of the line by the facilitator.