New research disputes the notion that heart attacks occur most commonly in the early morning hours. Sorry, your browser doesn't suppor Java.
Heart attack is just as likely to happen in the early evening .
Minor EKG abnormalities may mean Trouble New research disputes the notion that heart attacks occur most commonly in the early morning hours. According the a study in the American Heart Association journal, Circulation, cardiac arrest is just as likely to happen in the early evening. It's these added chemicals which act as stimulants to the heart. The study's researchers speculate the peak heart attack time during 5 p.m. and 8 p.m. could be triggered by a person's activity. Yet it is still unclear what people are doing in the early evening that might bring on a heart attack.