You may not know this but I actually had to do the Fitness Gram Pacer Test. Idk if it's national, but if you don't know, you basically just run up and down the gym (20 meters) a bunch of times. The real kicker is you have to get to the other side before the next ding from the track, and you can't go onto the next lap until the ding. So in the first part, you run as fast as you can so the gym teacher doesn't say "I believe in you you can do it" (which means he wants you to run FASTER) and you end up with an awkward 2 seconds of waiting. But it gets progressively faster. So on lap 20 where most people are pretty out of breath, you need to run like sonic to get to the other side. And you know how when you run and when you can't is designated by dings? Well to make sure that the teacher knows the tape is working (yes it's a music tape not a cd) they have music that plays. While you run. On paper, yeah it's great, but when actually put into practice you end up with a lot of kids not hearing the ding right away. Most can't hear it over the exercise mixtape that is just as loud as the dings. And you reaaaalllyy start to hate the songs after a while. But what's REALLY FUN is how every seven or so laps, the ding is replaced with a "wolawalu", which completely throws you of the first one or two times. It's not specified in the beginning that when you hear the sound you go, just that it marks that it's getting faster. The first time, at the beginning of the year, you do it just to see how far you can go, which for me was 19. At the end of the year, you have to do what you did, plus half. I had to do 29 (they rounded up). My gym teacher made it so that if you failed to do it first class, you did it the next one. And if you failed that one you do it again next class and so on. It took me about 4 classes to finally plow through it without bailing at 23.