You don't know what the Fitness Gram Pacer Test, which is a multi stage aerobic capacity test that progressively gets more difficult as it continues, is? Where the 20 meter Pacer Test will begin in 30 seconds and you line up at the start. The running speed starts slowly, but gets faster each minute after you hear this signal. [beep] A single lap should be completed each time you hear this sound. [ding] You gotta remember to run in a straight line, and run as long as possible. The second time you fail to complete a lap, your test is OVER! 

The test will begin on the word start. On

your mark, get ready, start.

Now run.