I think the problem is slightly opening out my arm (ie raising the elbow to the side). I don't do it intentionally, but I'm pretty sure that's what happened yesterday and I can only assume I did the same thing cleaning the chins.
I've taken a pill to try and head things off, so now I can only hope it works. It also means I have to sit in a very stiff, regimented position, because I remember yesterday that curling up how I like to made it worse.
Actually, thinking about yesterday and the way one pill made no difference over and over again, and so I ended up taking them every two hours, I've taken a second straight away - better that than one after another for the rest of the day.
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