Doctors say that most men should be able to tell if they are going to have a heart attack before it actually happens.
A recent study looked at data from over 500 middle aged men who had heart attacks.
More than half admitted that they had at least one symptom prior to the cardiac arrest, including chest pain, shortness of breath and fainting.
The majority of the symptoms came about a month before the attack.
Experts say you should never ignore symptoms and always visit your doctor with any concerns.