Use "jerkings" in a sentence

1. Raymond is a witness what nervous jerkings I have in my legs

2. Chokings and nervous jerkings, however, are nothing new to me when I think with anxiety of those I love

3. “You will admit yourself, general, that for an honourable man, if the author is an honourable man, that is an—an insult,” growled the boxer suddenly, with convulsive jerkings of his shoulders