UNFIT Tyson Fury dealt with some worrying fitness issues just four weeks before his trilogy clash with Deontay Wilder, his father John revealed.
Fury’s, however, still managed to retain his WBC world heavyweight title when he knocked out Wilder in the blockbuster fight in Las Vegas.
The Gypsy King survived being knocked down twice before finishing off the Bronze Bomber in the 11th round.
But there were fears over his physical fitness in the weeks leading up to the bout.
The Fury family had a stressful time of it shortly before the bout as Tyson welcomed his sixth child with wife Paris in August, but baby Athena spent time in intensive care after being born.
The latest addition to the family was cared for in Alder Hey Hospital in Liverpool and Tyson’s dad John encouraged him to go out for a run and keep fit, but he was not in peak condition.
“I went to Alder Hey Hospital, I accompanied him just to keep him right,” Fury Sr told Sky Sports.
“I said ‘look, you’ve got to do some form of exercise, just don’t sit in here. Let’s go for a bit of a run, you’ll feel better after it’.
“I’m 56 years old, 20 stone, I outran him. We went for a run round Liverpool and his lungs were on fire, I thought, ‘look at this’. My lungs? You couldn’t hear them. He struggled with a three-mile run.
“He said afterwards, ‘that nearly killed me’, so that’s where he was at four weeks prior to that big night.
“He was going to do it anyway, so what I said was, ‘OK then, I’ll try to make the best of a bad job. I’ll fill him full of confidence’.
“But deep down inside I was worried because I thought ‘you know what, he shouldn’t be doing this’.
“There’s a power to be in boxing, Tyson wanting to stand up for his country knowing Anthony Joshua just lost his belts at home, two miles from where he lives.
“He thought: ‘You know what, I can’t be like this man, I’ve got to do my own thing, stand for my country. Win, lose or draw it’s on!”