The risk of suffering a heart attack rises after having sex or exercising, according to a report in the Journal of the American Medical Association. However, the risk remains very low.
CNN quotes a report from Health.com which said the normal risk of a heart attack is literally one in a million. After sex or exercise it rises to three in a million.
"Definitely, one should not interpret our findings as meaning that physical activity or sexual activity are dangerous or harmful," said study co-author Dr. Issa Dahabreh, a researcher at Tufts Medical Center's Institute for Clinical Research and Health Policy Studies in Boston. "The effect at an individual level is small."
The study said people who are more physically active in general have an even smaller risk.
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The researchers analyzed 14 studies dating back to the 1980s regarding heart attacks and physical activity to reach their conclusions.
Dr. Geoffrey Tofler, a professor of preventive cardiology at the University of Sydney Medical School in Australia, stressed that it is extremely rare for sex or exercise to trigger a heart attack.
"If a healthy 50-year-old person has [a] one-in-a-million chance of having a heart attack in any given hour, tripling the risk will still only make three chances in a million of a heart attack in that hour," said Tofler, a co-author of one of the studies the new research analyzed.
Tofler said the analysis was "conducted very thoroughly" and is close to being the last word on the subject.