I have had these back "twitches" for about 2 or 3 years now. I find when I'm sitting or laying down relaxed I get these black twitches almost like a jerk, I feel it in my low back but it makes my whole body jerk. looks almost like I have the hiccups. It happens randomly not much of a pattern on how long it last or when specifically I get them. I have been to a massage therapist a chiropractor and my doctor all with different ideas of what it might be, one said non of which really made the twitches go away. I found after working out and strengthening my back muscles it caused the twitches to happen less often. I really just want to know if anyone has the same thing and has gotten better info than me. I'm completely healthy, on no medication, I have never injured my back before. It just started to happen one day. Hope you can help!