No guys, not that muscle.
I woke up in the middle of the night with my upper back muscle(s?) going into spasm. Since this happens every couple months or so, I thought "here we go." I can fall back asleep in seconds, so I did, and I woke back up about 5:30 in immense pain and took 3 ibuprofen.
My alarm went off for work and I could barely even get out of bed to shut it off. I can't turn my head without pain, so driving into work seemed a bit unsafe, so I'm home. I took 2 more ibuprofen around 10:30, with little relief. A hot bath helped. Lying down isn't any better than sitting up.
Once it stops spasming it will be really sore for a couple days, then I'll forget about it until the next time.
I think I can attribute the incidents in part to the fact that I'm on a computer all day at work, then come home and play on the computer. I probably never untense certain muscles?
I don't know. Does anyone experience this or have any ideas for prevention, or herbal remedies? Short of quitting my job and my cellar and my games, that is.