Fulham manager Mark Hughes admits his passion for football is so great it would be difficult to quit the game for the sake of his health.
The effect of the pressure that comes with Premier League football was laid bare on Thursday night when Aston Villa boss Gerard Houllier was admitted to hospital after falling ill.
The former Liverpool manager previously underwent open-heart surgery almost 10 years ago, while Joe Kinnear was forced to step down as Newcastle boss in 2009 after undergoing a heart bypass operation.
At 47, Hughes is more than a decade younger than both men but explained it would be a wrench to give up the game if he were to suffer the same fate.
"You have to understand what this game does to you," he said.
"I was out of the game for the first time in my career since I was a professional football player when I was sacked at Manchester City.
"It's okay for a month but, after that, you just crave to get back in because that's what you do, that's what you know, and that's what you love to be part of."
Asked if it was a drug, he added: "Absolutely, and once you've had a taste of it, it's something that's with you and has to be satisfied.
"If you're not in great health then any weaknesses can be brought to the fore because of the stresses and the strains that surround the game and surround your position as a Premier League manager.
"That's unfortunately been borne out in recent times and obviously in Gerard's situation."
Hughes sent his best wishes to Houllier, who has faced a demanding first season at Villa Park as the team has only recently climbed away from the relegation zone.
"When you're in the job we're in, the pressures build up and, certainly, at this time of the year, the stresses and strains come to the fore and they can bring out any weakness that you possibly have in your health," Hughes added.
"Whether you deal with it outwardly or inwardly, it still bears down on you and you have to have strategies to deal with that."