"I had no notion. I didn't feel unwell at all. I went to the gym and the next thing I knew, I had been several days in hospital."
Fitness business manager Strini Naidoo was one of the first on the scene and played a key role in saving Mr Munro's life when he suffered a sudden cardiac arrest - something that is different from a heart attack, which he had suffered 18 years ago and is the reason he goes to the gym.
"Some of the members made a noise that somebody had fallen in the changing room. We all rushed in ... and I saw his head popping through the [bottom] of the toilet door. I jumped over the cubicle, ripped the door out and pulled him out," said Mr Naidoo.
"He was just lying there; no movement, and his heartbeat was almost faint to nothing - it was really in a stressed state."
While juggling calls to St John, Mr Naidoo and his staff performed CPR and used the defibrillator - bought thanks to a Lion Foundation grant last year - to jolt his heart twice.
St John staff arrived soon after and took Mr Munro to hospital in a serious but stable condition.
He underwent a triple bypass and has a device in his chest so if the same thing happens again it will jump-start his heart.
On the day of the drama, the ambulance driver later returned to the YMCA to compliment Mr Naidoo on doing such a good job.
His actions helped save Mr Munro's life- although he plays down his role.
"You just act to the best of your instinct and that's what happened," Mr Naidoo said.
"I don't want people to make a big deal out of it; it's all in a day's work. I think anyone would do it.
"It doesn't make me feel proud, it doesn't make me feel excited, I'm just happy for him to be alive."
