I use to get this all the time and in the early am too. I hated it. I still get the twitching or sometimes a buzzing but I still get the shakes. Crazy! Magnesium helped a bit. Anxiety drugs should help too. I just don't have a natural substance, since I did take a lot of them that stops that feeling. I'm now on Prozac 20 mg. low dose and I have xanax when needed. Wish you full recovery from that feeling. I totally sympathize with u.