Black, 58, underwent open heart surgery last month on a condition he was been living with for over 47 years.
He told the Mail: "The doctors said I could be out on a jog one day and my aorta could burst and I would die – they didn’t quite put it like that, but that’s what they were saying".
Despite the risk of leaving things be, Black was still hesitant over surgery - explaining that he was nervous that he might not wake up from the operation.
Black could have missed the issue completely if it wasn't for an annual echocardiogram last August that showed he needed the surgery.
TEAM GB icon Roger Black has admitted he was afraid he wouldn't wake up from the operation that saved his life.