He was given emergency heart surgery for a heart attack he had suffered.
Heart attacks are caused when the supply of the blood is suddenly blocked. They are mainly linked to coronary heart disease where cholesterol and other substances, called a plaque, build up in the arteries leading to the heart.
The star made it out of the surgery but his recovery was “a bit of a nightmare”, he said.
During the show, he said: “I’m on eight [or] nine medications.