KNOW HEART ATTACK SIGNS. Memorize or bookmark link to have fast access in a crisis. Heart attacks are the #1 killer of men and women! What you do leading up to, and during can determine life/death and more/less permanent damage. You don't want to think you should have taken the time as can happen anywhere, anytime, with someone that can help, or alone. Symptoms different for woman vs men. For long time NO research for women. Now we know.