I'm one of those people that can crack just about every joint or point of articulation in my body. If I don't do it, start to feel stiff and achy (yes, yes I know). I also sleep in a weird position pretty consistently, ever since I was a kid. It turns out, most of my closest male relatives sleep in similar positions. On more than one occasion, people have commented that those close relatives and I have very similar ways of walking. I wonder what connection there is, if any between these things.
Hey, hugitout and theadvancedapes, I'd be interested to see what you think about this article.