That’s a new one on me but it makes sense. I squeeze like the dickens sometimes because I resent having to jab myself again when the first (or second or third!) time didn’t get any blood out. Guess I’ll have to reexamine the practice. I use a different finger every day, but some of 'em are more, er, forthcoming than others, particularly since a) I’m a guitarist and have a lot of callouses and b) after 32+ years of jabbing my fingers the non-guitar places start to have callouses of their own. Forefingers are the worst. And I’ve tried other spots–outside palm of my hand, inner arm–having read at some point that you can use those, but nothing really works like fingers.
