The Yars Revenge™ Pacer Test is a multistage aerobic capacity test that progressively gets more difficult as it continues. The 2 hour pacer test will begin in 30 seconds. Line up at the start. The listening speed starts slowly, but gets faster each minute after you hear this signal. A single lap should be completed each time you hear this sound. Remember to listen in a straight line, and listen as long as possible. The second time you fail to complete a lap before the sound, your test is over. The test will begin on the word start. On your mark, get ready, start.