Well, I took a hot bath with epsom salts, and woke up an hour later in freezing water. My back hurts.
Maybe it's all related to other back problems I've had, it just felt different. Kind of like it just seized up on me. Without cause -- I mean, c'mon, I was bending over (from a seated position, no less) to tie my freakin' shoe!
I have a whole regimen of back exercises I have to do once in a while when my disc starts barking. I guess it's time to do them again.
For those of you with back troubles, check this guy out. I went through the program ten years ago and he saved me from back surgery.
This guy KNOWS back pain!