He told the Sunday Times: "It was a big eye-opener for me because I didn't play as much as I would have liked to. That was down to my fitness because I could not get around the pitch as well as I should have been able to. I knew I had to do something to get in the United team, so I've improved my fitness and it seems to be paying off."
Gibson has been working with the United coaches in the gym and outdoors on his aerobic fitness and while the statistics bear out his devotion to an improved work rate, at times it still looks like he is strolling through games.
"I wish it was like that," he says with a laugh. "It is just the way I carry myself round. I have a lazy style. Trust me, I do sweat."