It's interesting looking at the most popular tags. Obviously Week 1 is the most popular, since I suppose a lot of people start and don't finish. Popularity drops off until excitement of graduation pushes weeks back up. The 20 minute run puts Week 5 pretty high for instance, and obviously Week 9 as the end point.
Week 6 is nearly at the end of the list, and I'm understanding why. You go back to intervals, so it seems like you're achieving less, yet for some reason it's still hard? Probably I found 5-8-5 as hard as 20 minutes straight because I was jogging faster, and I was jogging faster because finishing the 20 minuter, for the most part barely above a walk, boosted my confidence. But still, I'm looking forward to the 22 minuter so I that I feel like I'm going forwards again.