Well, *I* Had Back Pain, Anyway.

Interesting research finds that men's and women's vertebrae and hips differ in a way that allows women to have other people growing in their abdomens, without falling over. (At least not all the time.)

I have to admit that they speculate correctly that being on all fours was a lot easier on my back. Just harder on the knees, and I couldn't go a lot of places in that posture.