Last week I was repeating week 4 and those 5 minute intervals were such a struggle that I thought moving on to week 5 would be so difficult... Today I managed to jog both 8-minute intervals without stopping, and I felt amazing!! I realized during them that it really is just a mental hurdle. As I would get tired, I would think "am I really tired enough to stop... not really" and pushed forward. I'm still a little nervous about that 20 minute run but mostly I'm just excited!! Even if I struggle with it, it's just amazing to know I've come this far and that jogging for a minute straight at the beginning was the biggest challenge!!