when they are new, unexplained, persistent, or worsening. The American Heart Association, CDC, and NIH all emphasize chest discomfort, shortness of breath, weakness or lightheadedness, sweating, nausea, and discomfort in the upper body as important heart-attack warning signs.
1. Unusual or Persistent Fatigue
Everyone feels tired sometimes, but unexplained exhaustion that is noticeably different from your normal energy level deserves attention.
Some people, particularly women, report unusual fatigue or weakness around the time of a heart attack. The NIH lists unexplained extreme tiredness among possible symptoms, and the American Heart
