Men and women can have some very different habits between the sheets – something that’s often hotly debated.

According to new research into our secret bedroom habits, cleanliness is no exception to the rule.

Researchers discovered that men wash their sheets on average every two weeks, while women only do it once every month. That’s kind of gross, to be honest.

Ergoflex asked questions to over 2,000 UK-based adults aged 18-35 to discover what else is going on in our bedrooms – and there were some interesting finds.

Only one in 10 Brits have ever washed their duvet. Ever.

A spokesperson for ErgoFlex said to the Daily Star: “We found it interesting that men seem to be far more hygienic when it comes to their bed than females do, especially when compared to old data.”

And even though changing your bed sheets can be a drag, the experts at ErgoFlex recommend changing up your bedding “at least once every couple of weeks, especially if it’s hot, but once a week is preferable.”

Research also revealed that over two-thirds of us sleep in the buff, but women were much more likely to do so than men.

The company also asked how often we wash our PJs and again men turned out to be cleaner than women, putting them in the wash once every three wears versus once every five.

In other slightly bizarre bedroom news, a man went to hospital after getting a 24-inch sex toy stuck inside himself. He had been attempting to remove the toy for 24 hours before seeking medical assistance.

He told doctors he was suffering from mild abdominal pain but had no other serious symptoms.

His x-rays revealed a “long and large-sized” foreign body in his colon – which baffled doctors.

Traditional removal tools were tried by the doctors, but all failed to retrieve the sex toy due to its “smoothness and size”. They had to get creative and thread a piece of wire through a catheter to create a sort of “noose” and pull it out that way.