Sometimes when I am really, really tired I will be falling asleep, but before I am completely unconscious I will sometimes have an uncontrollable twitch or jerk. It’s never excessive, just one or two big twitches.
I don’t remember if it has anything to do with my sleeping position. I think it will randomly happen no matter if I am laying on my back or side.
I have noticed though, that it happens more frequently when cuddling on the couch with my girlfriend; we’ll both be falling asleep then I will have a sudden big twitch either in my arm or leg or abdomen. It always scares my gf awake and she yells at me to stop twitching! Neither of us know what exactly causes it.
Normally when it happens, I will jerk, then just nod back off to sleep. If somebody else has experienced this or knows about it please share some info or explain a little.
Thanks!