It’s common knowledge these days that regular exercise and an active sex life are heart-healthy. But have you ever wondered whether all that huffing and puffing was stressing your heart rather than strengthening it? That’s exactly what a recent study aimed to answer. Doctors have known for a long time that physical or psychological stress can trigger heart attacks, but how does this reconcile with the conventional wisdom that exercise is actually good for your heart?

Turns out, both assertions are correct. The risk of a heart attack does indeed rise immediately following strenuous exercise or sex, but only for an hour or so, and only if you do not engage in these activities on a regular basis.

Researchers found that any physical exertion, such as having sex, running, or climbing stairs, raised heart attack risk 3.5 times higher than during periods of rest. During sex, the risk is 2.7 times higher. The risk of dying from a heart attack is five times greater immediately following physical exertion than when you are resting.

However, you should not misinterpret these findings to mean that you should not exercise. The risk is still transient and very low, while the overall benefits of exercise remain compelling. The temporary risk of heart attack after exercise is limited to a one- to two-hour window, while the cumulative benefits of exercise can actually reduce your overall risk of having a heart-related episode. And, the more regularly you exercise (or have sex), the less elevated your risk is after each period of exertion.

It may seem strange to think that activities that pose short-term risks after each occurrence are actually healthy when cumulative effects are measured, but that is the case with exercise, sex, and heart disease. Keep in mind that regular exercisers experienced a smaller increase in risk after these behaviors. For every additional episode of physical activity a person implemented each week, heart attack risk dropped by 45%.

The bottom line is that if you are not a regular exerciser, you should be. Most of us experience occasional bouts of physical activity. You can attenuate your risk of heart attack following workouts by making sure they occur more often. Start your exercise routine gradually to avoid raising your heart attack risk as much as possible. Keep in mind that if you have been completely sedentary, even climbing a flight of stairs could qualify as enough physical activity to raise your heart attack risk.

For these reasons, starting an exercise program under a doctor’s supervision is vital. As you get into a routine of working out and your body becomes accustomed to the activity, your risk of having an exercise-induced heart attack drops more and more. Make the effort to get at least a moderate amount of exercise daily so that your heart is healthier and your sex life is safer – and better.

– Yvonne S. Thornton, M. D., M. P. H.