Scots celebrity chef Gordon Ramsay has revealed he has been diagnosed with arthritis and only made the discovery after falling while out a run.
Doctors confirmed to the 54-year-old that he had the condition in his knee and even told him that he should 'pace himself' despite having a busy work schedule.
The fitness fanatic makes sure he works out two-hours-a-day, on top of a 12-hour work day.
He says he uses exercise to relieve stress from his high pace job.
Speaking to The Sun, the TV chef said: "I've just come off two weeks on crutches as I had meniscus surgery. I did it running up the hill in Richmond Park, bolting up it. It was f*****g painful.
"And when I got the X-rays back, the doctor said, 'You've got arthritis in your knee'. I'd never heard that word in relation to me before.
"He told me I needed to start slowing down. It was a case of 'Imagine you've got 1.5million steps to run over the next 30 years . . . pace yourself'."
Gordon added that working out is his "release", but that he also has a "stern warning of my father dying at 53 (from a heart attack) and I look at my kids and know I can't leave them rudderless."
"I am slightly scared of stopping but do know I will have to slow down at some stage," he added.
Meanwhile, he's set to return to our screens with Gordon Ramsay's Bank Balance, a primetime BBC quiz show.
Players can win up to £100,000 by answering questions against the clock to earn the chance to balance bars across a precarious pyramid structure.
And in classic Ramsay style, the famous cook lets slip an F-bomb just 45 seconds into the first episode.
Asked how frequently he swears on an average day, Gordon laughed: "Around 150.
"But there is an art in telling someone to f off, and the amount I swear depends on how much dog s**t gets picked up on the Common.
"The BBC has been very supportive, though, and told me that if a naughty little f*** slips out, so be it."
Gordon Ramsay's Bank Balance airs tonight at 9pm on BBC One.
