Wow, I just completed week 3 and found it to be easier that week 2! Now I'm afraid that week 4 will kill me. Could be that I'm improving, but really, running the 3 minutes seemed easier than running the multiple 90 seconds in the previous week. Either way, I'm just waiting to be devastated when I start week four this weekend. Not sure what to expect since I don't "listen ahead".
Overall I think I'm relaxing more as I run, for some reason week one had me nervous and I think it effected my breathing and even my weird arm swinging! So continuous of my arms that I was moving them all over the place--was expecting to take-off! Wishing you all, and me, luck!
Laura rocks and her words of encouragement really help.