Everything on the Death Star is regulated by the clock. Meal times are precise. Shifts have exact start and stop times. Even sleep and potty breaks are strictly timed. Darth Vader does this because it keeps everyone alert and a little bit anxious, which makes them very prompt when receiving commands. It's a frightening method of leadership, but it seems to work for the Dark Lord.
Now he wants you to stay on schedule (not target), so he's issued all his Stormtroopers one of these: the Star Wars Death Star Kitchen Timer. With one minute demarcations up to 59 minutes, you'll know when to switch your interval training or when to take the cookies out of the oven before they go a bit too Dark Side.
If you are not familiar with spring-wound timers, read this: YOU MUST FIRST ROTATE THIS UP TO 60 and then set it to the time you wish to count down. If you don't do this, you're not winding the timing mechanism. See how it doesn't have any batteries? This is how it gets away with that.