I also experience daily tremors, anytime between 2am and waking up. They are most noticeable when laying on my back but also happen when laying on the side and seem to affect my torso only. Since appearing several months ago, after I had all my 4 Covd shots, they did not go away since. Alcohol consumption seems to make the tremors stronger but even when not drinking at all they do not disappear. They feel roughly like an electric toothbrush when switched on and interestingly they are not exactly continous. Every few seconds they stop for a fraction of a second. My GP ordered blood tests which all came back fine. I have gotten used to the sensation but would love to know what causes it, so I will keep monitoring this forum. But reading through many of the comments here I don't think anyone has yet come up with a satisfactory explanation.