In this exercise, players form two rows facing each other. Each player observes their partner for a moment.
Then, players turn their backs and make three changes to their appearance, such as untying shoelaces or switching a watch from one wrist to another. After making changes, players face each other again and try to identify the changes their partner made.
Players continue to change partners after each round, aiming to find four changes, then increasing to seven or more changes over successive rounds.