When asked whether he slept on Friday night, Giggs was candid in his response.
"No," he said. "Leaving out players was the reason I didn't sleep. They are team-mates of mine and I've never done it before.
"It was a tough one to leave Juan out. But he put on a half-hour master class. He was brilliant and I was really happy for him.
"It's not easy, he's got a big price tag and to not start the game was disappointing for him.
"I'll continue not enjoying (leaving players out); that has been the hardest part this week."