You can have a heart attack and not even know it. Not all heart attacks come with clear warning signs. There is not always an alarming chest clutch followed by a fall to the floor as you see in movies. Some heart attack symptoms don’t even happen in your chest and it’s not always easy to tell what’s going on. A silent heart attack known as a silent myocardial infarction (SMI) accounts for 45% of heart attacks around the world. So how to spot the warning heart attack signs in time? In this article you will understand what are these