On the way in at 5:30 AM there was hardly anybody on the road and it was cool out. I was feeling good from a surplus of caffeine and I just started hammering like it was a weekend training ride. So about 9:30, by the time all my endorphins wore off, I was wiped out. Had to drag my butt through the rest of the day because I thought I was Jan Ullrich! The commute home was a little slower.