With festivals, holidays abroad and a likely encounter of the close kind on a Saturday night, it’s set to be another long, hot summer – and in more ways than one. If you’ve ever wondered why towering temperatures mean an increased sex drive, turns out there’s a scientific reason behind summer’s bangathon.

It’s all to do with getting the D. Not that kind. Vitamin D – something your skin produces when exposed to sunlight – spikes in the summertime since we spend most of the year overcast. A study in the journal of International Urology and Nephrology suggests that an increase in the stuff can cause your libido to hit the roof, stimulating hormone and bone development – on all fronts.

What’s more, research by the Boston State Hospital found that a spot of sun can raise testosterone levels by 120 per cent, which has long been linked to sexual arousal, too. Plus, the sea of naked bodies on every available patch of grass may have something to do with it. More skin makes you think of being naked, and unsurprisingly, the mind often jumps to sex.

So the next time the heat jumps (and your shorts fall), just remember that your body is even more a cauldron of chemicals in the summer months. Then maybe take a cold shower.