I have this theory that Rumsfeld is obsessed with a light quick military as opposed to a lumbering muscle bound military, because he is, shall we say, not personally oversized.

Blogger ate a post on this theory with actual links and stuff.
It had links to articles in obscure Princeton alumni journals about how he was captain of the 150 pound football team at Princeton. That's pathetic. Serious short guys like me either play with the big boys or ignore sports entirely (OK short guys like me ignore sports entirely). Also he was a champion wrestler in the 157 pound weight class, which is about one pound for every billion his plan for a lighter quicker military is scheduled to cost (and cost over-runs are not as excluded as are overweight wrestlers).