A calm perception exercise where players walk through the room while exactly one (or more) player must always be standing still, with the impulse to stand or walk freely given or taken by anyone.
The players walk through the room (see Room walk). One player, however, doesn't walk but stands. The rule now is that exactly one player must always stand - whoever it is. A walker can therefore relieve the standing one by stopping themselves. Or the standing one can start walking on their own, and immediately a (single!) other one must stand still in their place. So the impulse can be given or taken. It is also possible that always two or three must stand at the same time.