pseudorandom

I was waiting for the tram from the Main Terminal to the North Terminal at Sea-Tac recently and found myself standing behind someone I had to snap a photo of:

This guy was a bodybuilder who looked to be in his mid- to late-forties. Fine, good for him. He was balding on top, with longish hair nonetheless. Not the style choice I'd make if I were going bald, but okay.

But then there were the shorts. Though this picture doesn't do them justice, they were straining around his thighs and so were pretty much skin-tight as a result. From a distance, it looked like he was wearing a thigh-length wet suit bottom.

And then there was the inevitable, the inescapable, the ever-present fanny pack (held in the hand because, presumably, he had just come through security). Once and for all, can someone tell me what bodybuilders carry in those things? Am I missing something?