Tottenham manager Harry Redknapp says he has lost none of his enthusiasm for the game and has given no consideration to when he might retire.
Redknapp celebrated his 65th birthday on Friday but he is currently enjoying one of the best seasons of a long managerial career, with Spurs on course to finish in the top four of the Premier League.
Redknapp's success has come amid a series of troubles, however. He underwent a minor heart operation last November and has recently had to go through a draining trial to clear his name in the wake of tax evasion charges.
None of that has left Redknapp thinking about moving on, however, and he could end up managing past the age of 70, just like the man who will face him in the opposing dugout on Sunday - Manchester United boss Sir Alex Ferguson.
"I don't think about packing up," Redknapp said when asked if he could see himself managing past 70.
"Everyone is different. Alex is 70 but he doesn't seem 70.
"I might look 65 but I certainly don't feel it. I don't know what I would do with my time if I retired.
"I've got no hobbies really. I only have a game of golf every now and again. That's it.
"It's not like I would be retiring from a coal face or anything. You get to go to all these fantastic places in this job and football is in you.
"It's something you will miss when you don't do it.
"I will not be applying for my bus pass. I haven't been on a bus for years."
Redknapp can understand why some bosses would want to lighten their workload as they grow older, but he does not think there is much chance of him doing the same.
"Fergie delegates more than he used to," Redknapp added. "That way he gets his free time, he goes racing, and does what he wants to do.
"You have to have your free time but my problem is that I say yes to everybody.
"I always have people ringing me up saying: 'My son's running in the marathon - can you sponsor him?' and I do. I get someone saying: 'Mr Redknapp, my husband has been a supporter for 50 years but he's ill and can't afford a ticket,' so I buy two tickets for him.
"I'm thinking: 'Am I mad or what?' I am. But I won't change."