Here is what Dr. Fiocco says, regarding warning signs of a future (not imminent) heart attack:
However, denial is rampant even among, as Dr. Fiocco says, people with chest discomfort.
My brother’s coworker, for several years, had noticed a decline in energy, increased fatigue and shortness of breath. The middle-aged man chalked it up to getting older and lack of exercise.
Fast-forward well-beyond total recovery: This man scuba dives and says he feels 20 years younger!
Of course I’m short of breath, the obese person or smoker might think, or someone who never exercises will conclude.