Here is fact number 21. It's kind of a fact inside of a fact because there's so many of them! :)
21. Most "classic" warning signals of a heart attack:
Uncomfortable pressure, fullness, squeezing or pain in the center of the chest that lasts more than a few minutes, or goes away and comes back.
Pain that spreads to the shoulders, neck or arms.
Chest discomfort with light-headedness, fainting, sweating, nausea or shortness of breath.