I fell asleep on the couch last night, I woke up around 3:a.m. with a massive back spasm that didnt go away for five hours, it was hell, I was exhausted and there was no way I could sleep, I couldnt even sit still for a few seconds, had to keep moving, it felt like someone grabbed a handfull of my back muscles right in the center of my back and was twisting them :| I finally got to sleep around 8:a.m. and am just fine now