"I wore old pajamas and a robe and my hair was all screwed up," he said. "I didn't care what I looked like. I had set a goal and you can get discouraged."
Corso fulfilled his goal of returning to "College GameDay," although he was forced to rely on note cards to make sure he got his comments across.
"I learned that less is more," he said. "I didn't say anything and I was still getting paid."
Corso said a modified schedule, in which he skipped the "SportsCenter" broadcasts, and naps helped him sustain his strength.
The "College GameDay" team of Corso, host Chris Fowler and analysts Kirk Herbstreit and Desmond Howard makes its season debut Sept. 4 from Atlanta to preview the LSU-North Carolina game.
The show has been expanded to three hours with the first hour, which begins at 8 a.m., on ESPNU. Erin Andrews will host the first hour and also provide reports during the final two hours.
Lee Corso, known for putting on huge pieces of headgear in picking the winner of ESPN's "College GameDay" games, Corso gave his predictions on OU's and OSU fortunes this season.
"Oklahoma, I think, will go undefeated. I think Oklahoma is going to play Nebraska for the Big 12 championship. ... They are loaded. Landry Jones is going to be a Heisman candidate.
"Oklahoma State lost some real good players. Their quarterback, Zac Robinson, they are going to miss him. But they have a defensive coordinator named Bill Young — that guy can really coach defense. As long as he is there, I think Oklahoma State has a chance to be a good team."