Just done day 3 level 1. Fear I am sailing a bit too close to Jillian's "phoning it in" in places.....
Not really HURTING as such, it's just all such hard work!
Still, it is done for today, off to eat virtuous protein heavy meal now (steak 'n salad).... 
WiseKneeHair, not sure it is getting any easier though....
, THOUGH, am wondering whether I can feel my friendly belly that has for a while now had a life of its own, moving slightly less of its own accord.....
(frantically optimistic)