7. Listen to your body. This is probably one of the most important things you can do to assess your risk. "If you're having heart symptoms—vague chest discomfort, shortness of breath, palpitations, fainting spells, light headedness—don't brush them off just because you've got a low risk profile," warns Myerburg. Seek medical attention as soon as possible. After all, he adds, "a risk profile tells you what may happen in the future, whereas symptoms tell you what's happening now."