Pep Guardiola felt his side had come through a tough game after grinding out a 2-0 victory over Everton on Saturday.
Erling Haaland struck twice in the latter stages to secure a hard-fought Premier League success for the champions at the Etihad Stadium.
It was City’s 10th successive triumph in all competitions and Guardiola said the manner of the win would stand them in good stead as they chase a repeat treble.
The City manager said: “I love to win this type of game. The difficulty is there. We knew it, we talked about it.
“Always Everton here at home is really complicated. We’ve lost a lot of points over many years.
“What pleased me the most is something the people cannot see – the body shape, the positivity, the body language.
“In the first half we were complaining. I know a 12.30 (kick-off) is more difficult but our body language was not good. The chemistry between the players, when they lose a ball or something is not going well, has to be better.
“But in the second half it was much better. In general it was well deserved.
“I like to win this type of game – suffering and knowing how difficult everything is – because we learn the lessons for what’s coming.”
With Haaland and Kevin De Bruyne, who have both had lengthy lay-offs this season, now back in tandem and the rest of the squad fully fit, City’s momentum could be ominous for their rivals.
After last season’s achievements, doubts were cast over City’s durability as they stuttered in the autumn but Guardiola never had any concerns.
He said: “With Erling and Kevin we are stronger, that’s obvious, but when a team loses the consistency, we have to be worried with the way they train, behave and run.
“But it (good attitude) was always there. When that happens the team is alive. I was never concerned. Since day one I didn’t have the feeling.
“There are ups and downs, it’s normal, but I still liked what I saw.”
The defeat left Everton in the bottom three and without a league win in almost two months.
Manager Sean Dyche accepted his side had been beaten by a master finisher in Haaland, who broke the deadlock on 71 minutes and then wrapped up victory five minutes from time.
Dyche said: “That’s why he is who he is. He doesn’t have many touches in some games but he scores and that is the key.
“His finish for the first one – I have been speaking to the players recently about this – footballers scoring ‘trendy’ goals – whippers, dippers, clippers.
“He doesn’t think about that. Just score a goal. That’s the trendiest thing you’ll ever do. And he showed that, a good technique. Just smash it and don’t worry about anything else.”