Mine was rly bad 10 years ago could hardly move it and was told I had severe ac degeneration 😱 whcih is a Weight lifting issue it says, to be fair it got way better and goes away completely but some weight stuff can trigger it off again but I know when to stop it somehow runs from my finger right up to the side of my head.
It’s prob because I am hyper mobile and don’t have same strength in my joints as I’m hardly a serious weight lifter prob also have bad technique.