Everyone knows that sunlight provides a good mood and warmth relaxes. But there's another benefit that's better than all the others: it makes your body produce vitamin D, and more vitamin D means better sex.

According to several studies, even some sunlight replenishes the stores of this important vitamin.

Aly Dilks, a health expert practicing in the UK, says: "We know that people can suffer from Seasonal Affective Disorder (SAD) in the winter, so the sun is hugely important for our well-being.” She says that when it comes to the sun’s positive effects on chemicals, “testosterone is the one most responsible for our sex drive and studies show that the sun is a great factor in its production.”

Dilks uses “caveman times” to illustrate her point. "Those men catching animals out in the sun all day still needed the energy to come back and procreate to save their race,” Dilks said, “This is nature at its rawest.”

But this is not just a men's problem. Women who are deficient in vitamin D have lower estrogen levels, which also reduces their desire for sex. This affects both desire and vaginal health.

But there is one group of people for whom staying in the sun for too long is not a good idea - people with red hair.

However, there is good news for them too: the same genes that cause fair skin and red hair also help produce their own vitamin D.

But no matter what your hair color is, it's good to know that getting more sex in your life is as easy and fun as going for a walk in the sun.

If I like to do it rough, then I'm a… whore?