Manchester United boss Sir Alex Ferguson admits he'll never take notes during games.

Ferguson was discussing with Harvard Business School students what he does at halftime in games:

"There are maybe eight minutes between you coming up through the tunnel and the referees calling you up on the pitch again, so it is vital to use the time well.

"Everything is easier when you are winning: you talk about concentrating, not getting complacent, and small things you can address.

"But when you are losing, you know that you are going to have to make an impact.

"The last few minutes of the first half I'm always thinking of what I'm going to say. I'm a little bit in a trance. I am concentrating.

"I don't believe in taking notes. I see other coaches do it, but I don't want to miss any part of the game.

"And I cannot imagine going into the dressing room, looking at my notes, and saying 'Oh in the 30th minute, that pass you took'. I don't think it's going to impress the players."