Too many people don't know the common warning signs of a heart attack. Knowing them could save your life.

The American Heart Association says they are:

• an uncomfortable or full feeling or a squeezing pain in your chest that lasts for more than a few minutes or goes and comes back;
• pain that spreads to the shoulders, neck and arms;
• chest discomfort with lightheadedness, fainting, sweating, nausea or shortness of breath.

If you feel any of these symptoms, get to a doctor or emergency room right away, the heart association advises. Blood tests can confirm whether you've had an attack. The sooner treatment begins, the better off you'll be.