INSTRUCTION CARD: a suggestion for an experiment.
Try this experiment solo. Try it in a group and see if you can hold your different rhythms. Try at different times of day.
How to know when the four minutes ends? You could set yourself an alarm and put it out of sight. Or, better, have someone keep the time for you and count you in and out. I’ve found that a few people, musicians especially, can be accurate to the second.
But don’t worry if you find you’re wildly off. The reason to do this is more to test how it feels than to be ‘correct’.
Afterwards please let me know how you felt doing it, and how close you came to matching the clock.