That, surely, is why fans go to games and sing, and shout, and sometimes scream: in the belief that it has some intangible effect on their team, and the opposition.
Manchester City can't cope with the pressure.
Despite the 3-0 defeat by Liverpool in the first leg of their Champions League quarter-final at Anfield yesterday morning (Singapore time), he said that his team "did really well". "There are 90 minutes more".
His statement lacked conviction.
City's coach was pelted with missiles - including bottles, cans and fireworks - as it turned onto Anfield Road from Arkles Lane near the stadium prior to the game.More news: If I come out of retirement, it'll be for a UFC fight
Mourinho said: "You see the number of points we have and it is easy to go to the books with the number of points we have we would normally be in the fight for the title but we are not because City have a very good number of points that makes it very, very hard to fight for the title, which we are not in this moment".
Sergio Aguero is still not fit enough to make City's starting line-up but is on the bench, with Raheem Sterling likely to take up a central role up front, while Bernardo Silva comes in for De Bruyne - Danilo and Fabian Delph replacing Walker and Laporte respectively.
Of course, Manchester City's versatility is different than Barcelona and Bayern Munich, but the opponent is also different than Real or Atletico Madrid.
Merseyside Police have asked the public to send them footage of Manchester City's team bus being attacked at Anfield on Wednesday.
Pogba has been the centre of attention for the last 24 hours following Guardiola's stunning claim that the player's agent, Mino Raiola, attempted to spark a move for the Frenchman to City in January.More news: Spain defeat Germany while France, Croatia also reach Davis Cup semis
City's dominance has been so overwhelming that many are already ranking them among the best teams in Premier League history, alongside the likes of Arsenal's "Invincibles", who won the 2003-04 title without losing a single match, and United's 1999 treble winners. In the last action it's unbelievable how we didn't score a goal.
After decades of living in United's shadow, City have changed the balance of power in Manchester firmly in their favour and are on the verge of their third title since 2012. What followed was a kind of fudged change, bolstering his central midfield but leaving another area of the field undermanned.
Manchester City gaffer, Pep Guardiola, has reportedly landed a whooping £20m-a-year new deal at the Etihad outfit. Thus, Guardiola must use Klopp's strategy against him and go on an all-out attack so that the Liverpool defense can not position itself in up the field.
Manchester City have to shrug off the body blow of letting a two-goal lead and the chance to win the Premier League title against bitter rivals Manchester United slip to raise themselves for a Champions League rescue mission against Liverpool on Tuesday.
"Liverpool are great going forward but not that good at the back while if you attack too much against City, they can be so quick and risky on the counter".More news: 'What have I done?' - Zuma asks as corruption trial begins
"I don't have too many regrets or complaints".