Seduce her tonight to protect your heart
We don’t mean heartache in the romantic sense. Researchers in Belfast and Massachusetts both found that having sex two to three times a week can half your likelihood of a heart attack or stroke. You will be relieved to know that the chances of dying on the job are minimal: only 1% of all fatal heart attacks occur during or after coitus, says the American Heart Association.

Have afternoon delight for a better night’s kip
It’s not just sheer physical exertion that knocks you out like a tranquilliser after the act, but a complex cocktail of hormones released at orgasm including oxytocin, which also promotes sleep and prolactin. (Incidentally, sex induces four times more prolactin than masturbation.) An overly energetic bout can have the opposite effect, however; save that for afternoon sessions.

Orgasm more to cut your cancer risk
A study of 29 000 men in the Journal of American Medical Association found that those who enjoyed 21 or more ejaculations per month had a lower risk of prostate cancer than those who came a measly four to seven times. The same was true of swordsmen in their fifties, according to Nottingham University. Periodically cleaning the pipes prevents a build-up of carcinogens.

Perform in the bedroom to excel in the boardroom
If you’ve got a big presentation coming up, take heed: an experiment in Biological Psychology found that the blood pressure of those who had sex during the previous fortnight spiked less during public speaking and returned to normal more quickly. Intercourse reduces levels of the stress hormone cortisol, while that resulting reduction in stress is yet another reason cited for a lowered risk of prostate cancer.

Have sex to stay young
A British Medical Journal study found that men who had sex twice a week reduced their risk of death within a 10-year period by 50% compared with those who managed it once a month. Royal Edinburgh Hospital researchers found that thrice-weekly participants looked up to 10 years younger thanks to higher levels of anti-ageing growth hormone, blood oxygen and testosterone (to say nothing of their smug expression).