Are there days some of you find that your hands shake more than others? Today I had the plumber ask me to sign his work sheet. My signature ended up looking like a delinquent parrot had got hold of a biro:

Later in the food store I was asked to confirm my payment card's code - I had difficulty getting my finger to press on the correct button, and in the end I held my wrist with the other other hand. Things are stabilised otherwise I would have had difficulty writing this thread.
On another point about hand shake, has anyone found that smoking a cigarette

causes the hands to start dancing?