Improve reactivity
Each player stands in a square of pots
4 pots for the first person, then 2 pots for each additional person
Each game is given a number (1, 2, 3, 4). Trainer calls out number. Players must tap this number as quickly as possible and return to the middle of the square.
At 'change' they move one square forward and the player in front moves to the square at the back.