"I've adjusted to being left out more and more," he told the Sunday Times. "You've got to. You have to realise you're older and prepare that bit differently. I don't get disappointed when I'm not on the team sheet, because I'm experienced enough to know I'll play enough games, and if I'm playing well, I'll play in the big games.
"Even though you want to play in every game, you've got to be sensible. The manager's looking at the bigger picture and we have got a lot of players to choose from."
Giggs revealed that "sometimes when the manager doesn't want you to play, he might give you a couple of days off and tell you not to even train but just spend a couple of days in the gym".
Still sprightly after United appearance No 751, he added: "I hope what he [Ferguson] does will help prolong my career."