I just finished my first time of level 2 of the 30 day shred and all I can say is OH MY GOD I WANT TO DIE! I can't believe there are people out there that do this every single day, crazy peopel!
I was unsure whether to start level 2 or continue a bit further with level 1. But as a forum friend pointed out, it is important to push your body. It was almost like hearing Jillian herself, and of course she was right! However, right now I can't imagine doing level 2 one more time, but hopefully the feeling will pass by Thursday, when I've planned my next level 2 date.
Like I said, I had my doubts about this, as I still think level 1 is hard enough. But still, I did manage to complete the whole thing (with a couple of small breaks), and I am very proud of myself right now! :)