A new survey has revealed that the average single British man changes his sheets only four times, wait for it, a year.

According to Digital Spy, a poll was carried out by mattress company Ergoflex which explored the hygiene habits of 2004 participants.

Of those who changed their sheets once every 3 months, 71% were men and 55% were aged between 18-24.

On top of that, most of the men surveyed only owned one set of bed sheets.

Single women were found to change their sheets at least every two and a half weeks, while couples washed their sheets every fortnight.

Managing Director of Ergoflex UK Jed MacEwan said: "We were quite alarmed at the apparent lack of basic hygiene from some respondents.

"Unclean bed sheets contain the tens of thousands of dead skin cells that we shed every night, and by going months without cleaning them you're risking some distinctly unpleasant consequences every time you go to bed."

This is just a little disturbing... Maybe it's because the below tends to happen.