I have this as well.

It started about a year ago, i would wake up and think my phone was vibrating on my bed, only to realize it was me. It always feels very external. I thought it might be alcohol, so I completely quit drinking because of this. It definitely moves around, once my jaw was even chattering like I was shivering but i wasn't cold. Usually i feel it in my chest or shoulder. I did have Covid a few times, and this began after the last time I think I had Covid, but I was never tested, I just assumed. I just stayed home for a week. It went away for months, then it came back recently. It seems to happen every night lately, but sometimes I barely notice. It is very disturbing.

I do have low iron, I am male and the suspicion is that it is caused by my Heart Burn pills, which can impact iron absorption. I have been taking Iron daily since for a couple of months now, and a few weeks ago i started taking daily multivitamins. After reading this, i aslo took some extra D and B12.

I don't think I have any of the other symptoms like the zaps or muscle weakness. In fact, I have been gaining quite a bit of muscle recently in an attempt to get healthier.

Oddly enough, I was around my brother in-law recently and he happened to mention that he can't sleep past a certain time anymore, because his body starts vibrating. I haven't had a chance to speak to him about it much, but I might this weekend. I was surprised that anyone else had experienced this, let alone someone I actually know.

I already take ambien for sleep, so this exhausting.