Well to begin with don't freak out before the tests, freak out after the results. The whole point of the tests surely is to discover what the problem is.We get hotspots, sometimes it will be just one muscle that is twitching day in, day out for months, sometimes it is a whole lot of them. It seems there is no muscle anywhere that is exempt nor any particular pattern. I stopped worrying about it a long time ago, the anxiety was far worse than the twitches, and the cramps (I get those too) The irony for me is, that when the tests did reveal something wrong with my nerves (and certainly nothing fatal) I felt relieved and justified. I may not have an explanation for BFS but I do have an explanation for a lot else.