Multi-Table Tournaments have those short breaks every hour, in which they allow you to do something else rather than playing.
Whether you are playing a freeroll or a tournament with a significant prize, the purpose is, obviously, getting to the final table and eventually winning the whole thing. This is why you should use anything you can get in order to get that extra edge needed for another hour of play.
So what do you do in those (typically 5) minutes in between play sessions?