I was bone-fragging tired, like I'd run a marathon, played a game of Urban Brawl, and then gone best-of-three-falls with Neil the Ork Barbarian. I settled two fingers on the opposite wrist-difficult, the way both my hands were shaking-and timed ten seconds on my watch while counting my pulse. I lost count at about thirty-five beats, and it was still short of ten seconds. I recalled Bent's comments on how debilitating 2XS was to the body, and decided he'd underestimated by a few orders of magnitude.