And it isn’t because it’s a more vigorous activity, either.
The reason heart attacks are most deadly during intimate time than any other time, 4-times more deadly in fact, is because people are embarrassed to call for help.
About 12% of people who have a heart attack during sex survive, on average, compared to about 50% of people who have a heart attack anywhere else, and that includes playing sports, exercising, anywhere or anything. In fact, they say that for every minute during a heart attack you go without help, your chance for survival drops about 10%. Dr. Ardalan Sharifzadehgan says that when it happens, the partner tends to be in shock. They’re embarrassed because they’re both naked and they’re afraid to call the neighbors for help, and even delay when calling paramedics.
He also added that in the event there’s a witness or bystander there, your chance for survival goes up. We assume he means “in general,” and not “in the bedroom,” but we’re not judging.
Obviously content on the website has to do with sex, so maybe don’t check it out at work, but here’s the source.