Why we do the Great Eight workout

So I'm guessing some of you are wondering why we run these. There are a few reasons.

1- I think it's a good, hard, fast workout.
2- These allow you to really push yourself to run hard because it's not a long distance, it's just a few minutes.
3- They make us faster. I attached a portion of an article from Runner's World that explains how they work.

Enjoy your workout!

"What's critical speed? It's the pace you need to run to reach your VO2 max (the maximum amount of oxygen that your body can utilize in a given amount of time). Running at least once a week at that pace teaches the oxygen delivery system in your body to be more effective. Training at critical speed, therefore, stretches your aerobic capacity and boosts running economy, meaning you'll be able to run faster with less effort. In one study, subjects who ran one critical-speed interval session per week for four weeks improved their running economy by six percent and increased their critical speed by three percent. In training, 800-meter repeats are the ideal distance to run at 100 percent critical speed. If you run longer intervals, you likely won't be able to maintain 100 percent critical speed, which means you won't reap optimal aerobic benefits." Ed Eyestone - Runner's World