An Australian woman has spoken out after she suffered a heart attack on a rowing machine last year and spent three days in a coma.
Emily Counter was at Anytime Fitness in Noosa in October when she went into cardiac arrest.
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Gym owner Aaron Peterson reacted quickly and started to perform CPR on Ms Counter, while another gym member Ben Duffy fetched the defibrillator.
Mr Peterson told the Courier Mail he was in shock but the defibrillator was easy to use.
"You learn how to use those things in your first aid course, but you never really use it," he told the Courier Mail.
"I pressed the shock button and her body sort of jumped off the ground like it was in the movies."
The pair were able to get Ms Counter's heart going again until paramedics arrived and took over.
Ms Counter was in a coma for three days and was diagnosed has having a rare heart condition called Bland-White-Garland Syndrome (BWGS). She had open heart surgery and is has now been given the all clear to exercise again.
She is now calling for defibrillators to be compulsory in all gyms.
"If I hadn't of had it [at my old gym] then I probably wouldn't be alive," she told the Courier Mail.
"It saved my life and it will definitely save someone else's."