Thank you Mariel, I didnt realize that the jerking was different from spasms. I thought it was the muscles spasming that made my legs and arms jump. I can be sitting at the computer and working the mouse and suddenly throw the mouse across the room from what I thought was a spasm. This magnesium, do I find it in the supplements area like by the vitamins? Im willing to try almost anything to get my body to calm down. My entire body does like a whole body tremor all day. Its horribly painful.