Flava FM host Sela Alo didn't know what was happening when he started "spinning out" on air.
The father-of-three couldn't talk, broke out in a cold sweat and turned the microphone off.
He was having a stroke, which is not uncommon for sufferers of heart disease.
Mr Alo was born with atrial fibrillation, a type of heart rhythm disorder. He later developed a valvular disease called mitral regurgitation.
In January 2011, Mr Alo, then 38, underwent open heart surgery after being given the choice: surgery or five years to live.
"The doctors were pretty straight up with me," he said. "They said that by going into my heart there's an element of risk and there's a chance I could die.
"But if I didn't have the operation, I'd be dead within five years."
The surgery was successful but two years later he had the stroke on air.
"I know what it means to live and breathe every moment as if it were your last."
Now, Mr Alo is focused on having a healthy lifestyle. "As a dad, I just want to be able to run and play with my children for as long as I can."
He wants other New Zealanders to look after their heart through healthy lifestyle choices as well.
He will be distributing donation boxes at Auckland businesses next Friday as a part of the Heart Foundation's month-long annual appeal.
Throughout February, thousands of volunteers will also be hitting the streets nationwide for the appeal.
Heart Foundation medical director Gerry Devlin said the foundation's work had never been more important.
"While we have seen a dramatic reduction in death from heart disease over the last 40 years, more than one New Zealander still dies from heart disease every 90 minutes," he said.
"We also have more New Zealanders living with heart disease than ever before who rightly have an expectation to live a productive life."
• New Zealand's biggest killer, responsible for more than 6000 deaths every year
• 169,000 Kiwis currently live with heart disease
• Kiwi women more than four times more likely to die from a heart disease than breast cancer
Source: the Heart Foundation
Heart Foundation appeal
• Go to www.heartfoundation.org.nz/donate, call the Foundation on 0800 830 100, visit a BNZ branch or donate to a street fundraiser.
• Or donate at a Heart Month event:
February 14, 4pm-5.30pm
Otara Pool & Leisure Centre, Newbury St, Otara
February 14, 9pm
Silo Park, Wynyard Quarter, corner of Beaumont & Jellicoe sts
Hibiscus Hot Rodders display
February 14, 9.30am-11.30am
Orewa Surf Club, Hibiscus Coast Highway, Orewa
Franklin A&P Show
Pukekohe Showgrounds, Station Rd, Pukekohe
Blood pressure testing at Heart Foundation stand
February 20 and 21, 9am-4pm