Jose Mourinho says he struggles to eat or sleep normally the day after Chelsea play a match and also says he sometimes fails the empathise with players.
The Special One returned to Stamford Bridge for a second spell in charge of Chelsea in the summer and is under pressure to emulate his own success.
Mourinho brought immediate success to the Blues, winning the title in his first season, attaining a record breaking 95 points in the process.
Things haven't got off to such a good start this time around, however - the 2-0 loss at the hands of Newcastle on Saturday was their third defeat of the season.
The 50-year-old says the pressures of being in charge take it's toll.
When asked how he relaxes after a game, Mourinho told reporters: “It’s difficult. Before the match is easy — I sleep good before the game. I am not nervous.
“However, after the game, even if you win — because it doesn’t have anything to do with winning or losing — it is more difficult. I don’t eat a lot, I normally don’t sleep very well and the next day it is the same for the players — they are very tired. They need a recovering day.
“It is also very difficult for me to wake up the next day and go to the training ground. I also need my time to recover because, during the game, you don’t feel it — but, after the game, you feel it."
Mourinho also admitted that he sometimes struggles to develop relationships with his players, admitting he doesn't always get it 100% right.
Such admissions may help to explain why Mourinho is struggling to fit Juan Mata in to the squad despite the Spaniard playing a key role for the club in the past two seasons.
Speaking to Chelsea's official magazine, the Portuguese said: “I don’t always get it [a bond and loyalty with players] 100 per cent. In some groups there are players and personalities you can’t create that empathy with.
"However, I try to be very club-minded; I try to show that we are not important but that the club are important - that we shouldn’t worry about ourselves individually but about what the team and the club need. I think I pass this message on well because I am a good example to them in that aspect.
“I am professional, I am committed, I dedicate myself, I fight for the players.
"Sometimes my person is attacked because I have certain reaction to things but it’s always in defence of the club, players, the team and the group.
“So I think the players feel all of this — they feel the passion and the ambition and they feel what you have in your heart and your mind.”