It doesn't count as a proper workout - half an hour of sex burns just 85 calories, so to lose a pound of fat in one month you'd need to do the deed 42 times - but there are other health benefits of regular fornication.
Lower blood pressure
We don't need a scientist to tell us that sex reduces stress, but did you know that it also lowers blood pressure? Researchers at the University of the West of Scotland found that subjects who had recently had sex had lower blood pressure and responded better in stressful situations, such as public speaking and verbal arithmetic.
Better immune system
Frequent bonking can reduce the risk of picking up the common cold and other similar viruses. Subjects in a US study who reported having regular sex had higher levels of an immune-boosting antibody than their celibate friends.
Men who ejaculate at least five times per week may reduce their likelihood of getting prostate cancer, according to a study in the British Journal Of Urology International. A US study also found fewer incidences of the disease in men who ejaculated more than 21 times per month.
For more sexy stories, subscribe to the magazine. We'll give you five issues for £5.
If you're looking for a partner who's as into fitness as you are, sign up to our online dating service, Fit Dates.
Get the Coach Newsletter
Sign up for workout ideas, training advice, reviews of the latest gear and more.
Coach is a health and fitness title. This byline is used for posting sponsored content, book extracts and the like. It is also used as a placeholder for articles published a long time ago when the original author is unclear. You can find out more about this publication and find the contact details of the editorial team on the About Us page.