I don't know if I mentioned that I've been going through physical therapy for my back. I just finished my 4th visit out of 6 visits. I'm steadily improving, and they are also giving me exercises (mat and resistance ball) to improve my core muscles. That seems to be the reason why I get out of alignment (or what I call "locking my sacroiliac joint") on a fairly regular basis.
Funny - the core area (abs, back, etcetera) is also where I carry most of my extra weight. Think there's a correlation? :) I do know that I've started losing weight since doing physical therapy, because I'm also doing Weight Watchers Online as well. I lost 1.5 lbs this week!