(Continuation of Stop-Go)

Have a group of people.
At least 3.

In silence = No talking

You go to the metro (U-bahn, subway, underground).

You can disperse as a group, but you try to keep connection within the group.

Enter the train.
When you sit, sit all at the same time (make sure everyone has a place, but you can’t sit down until everyone of your group can).

Don’t agree when to leave the train, when anyone of you gets up, you all get up. but try to decide it together, as a group when to leave.

You can can continue this as long as you want, set approximate time before hand. (if the ticket is valid for an hour, go four an hour… )