i have body tremmers and i have found that it is due to severl things. one is i am on tylox, which is allmost like speed. you get a rapid rush of engery, along with caffene, which is also acts like speed.i dont have body tremmers when i wake up in the mournings. they start when i take my tylox and then i have to watch about how much caffene i take every day.i take 750mg mathacarbonal to try to calm them down, it helps but doesnt get rid of them.so your medicine might be the suspect, along with caffene and fruit jucies, and other stimalets. take a good look at what your taking and ajust accordingly