One of the most frustrating and debilitating symptoms of ME/CFS is the shaking and trembling after minimal exertion. Something that healthy people might get after a strenuous exercise. I was lying in the bath relaxing last night when I felt the shakes coming on. This is what I get for walking just a few steps to the bathroom and getting undressed. I started feeling a bit of the internal tremors at that point, I imagined it might come to the shakes, and then as I lay in the tub to rest, before washing, they suddenly started up. (see the video clip below)
This is just the start, it then takes over my whole body and that's when holding my phone, or anything else for that matter, becomes very hard.