A heart attack happens when a coronary artery carrying oxygen-rich blood to heart muscle is blocked. Heart disease is the most common cause of death in the UK. You can have a heart attack at any time of the day or night, when you’re either resting or being active. 
Heart pain is a pressure, squeezing or dull ache felt in the center of the chest. Often the individual will not call it a pain, just a pressure or tightness, and may demonstrate it by holding a fist over their breast bone.
It may radiate to the neck, teeth, arms, back or, more infrequently, upper mid abdomen. It can lasts less than 15 min or more, the more the pain longer it lasts, (over 30 min.) the more likely it has progressed to a heart attack with damage or death of heart muscle.
