Ferguson will take charge of his final game against West Bromwich Albion tomorrow.
"It's been amazing," he reflected. "Sunday against Swansea was quite amazing, it was unbelievable. And the parade on Monday was, too. I thought 1999 could not be beaten but I think this was better. It was really great.
"And I went home that night and had 10 hours' sleep. I think it's the first time in my life I've had 10 hours' sleep! Cathy came up and I could sense she was in the room and I think she was just trying to see if I was alive. It was marvellous, really good, tremendous."