Because, man, I feel like crap! My legs feel heavy; my breathing feels labored; and I don't feel like in a week and a half I'm going to be able to run between 3:30 and 3:35.
Yesterday I did one of the hardest workouts I have ever done. It was 8 miles with 3 X 1600m at 5K pace, which is a 7:00 minute mile. There was a soccer game yesterday so I wasn't able to do my intervals on the track. So, I did the intervals on the Olentangy Trail, which is marked every half mile. I did two miles of warm up, then started the 1600s with 800 rest in between. The times came out like this: 6:58, 6:55, 6:57. The last one was really hard as it was uphill for the last half mile.
This is my last "sprint" workout before the marathon. I don't feel ready yet, but there's no time to change anything. I'm looking forward to Chicago.