Chelsea head coach Antonio Conte has revealed that he only sleeps for two to four hours before games.
The Blues will kick off their Premier League campaign on Monday night and the Italian is already ready to wake up early in order to prepare the game against West Ham United.
And luckily for Conte, wife Elisabetta and daughter Vittoria both understand the reason why he wakes in the middle of the night.
"Before the games, usually I don't sleep a lot," Conte told Chelsea's official website.
"I sleep for two, three, four hours – when when I wake up I start to think about the game, the situation, and often I have a good idea on a tactical aspect in the first hours of the morning.
"After the game, when I win I sleep, but when I don't win it's very difficult for me. In the middle of the night I think – what is the reason we lost?
"Sometimes I watch the match very quickly because I want to find an answer. Why? Where is the situation that creates more difficulties? Which is the player that creates more difficulties? Was our tactical plan good or not good? I need to have the answer quickly.
"I have a great wife, a great daughter.
"They understand me because they know me, my passion, my habit of working a lot and I think my wife knows that now I am here for this reason, for my passion to work, to improve myself, to always put myself in competition. I am lucky because I have a wife and daughter who understand this."