St John is giving free tutorials in a bid to reduce New Zealand's cardiac arrest toll.
The organisation, which aims to deliver the hour-long classes to at least 5000 people over the next year, will teach the '3 Steps for Life' process -- calling 111, starting CPR and using an AED (automated external defibrillator).
St John said the formula was designed to give New Zealanders the confidence needed to take action when somebody has a cardiac arrest.
Of cardiac arrests that happen outside of hospital, 64 per cent happen at home and 19 per cent happen in public spaces, according to the organisation's research.
St John said applying CPR and rapid defibrillation could increase a patient's chances of survival by up to 40 per cent.