First aid trainers across the West Country are encouraging people to sign up to learn lifesaving skills, so they know what to do in an emergency.
It comes after alarming figures released by Virtual College shows that 43% of people in Bristol and 60% in Plymouth wouldn't help in an emergency.
Over 80% of those surveyed across the UK said they were simply not interested in first aid training.
The reasons given for not stepping in vary, from thinking that someone else would help to feeling uncomfortable offering aid.
However, the most common reason was that people simply didn’t know what to do to help, lacking the knowledge or training to assist.
According to the survey, 64% of the UK are not first-aid trained.
This year, pupils across England will be taught first aid skills as part of the school curriculum.
Vanessa Smith, a cardiac nurse, from the British Heart Foundation says the main advice in a medical emergency is to stay calm.
"If there is an emergency cardiac arrest the first you should do is call 999. Try to take a deep breath and don't panic.
"The operator over the phone will explain how to do CPR.
"If there are other people around you're ok to ask them if they are better to do it. You are better to do something rather than nothing."
For more information on what to do in a medical emergency: