It's a fight that many couples face on a daily basis, but the struggle over who has more of the duvet could be a thing of the past, thanks to a new high-tech bed cover.
Sleep technology company Simba has developed an 'infinite duvet' which has a roller system in the base to ensure the cover is always evenly distributed.
As you turn during the night, the revolving duvet moves with you, feeding through a series of rollers and tensioning systems in the base, before feeding out the other side.
The company came up with the idea after research revealed that 'duvet stealing' is one of the top areas of bedtime conflict between couples.
One in four people believe a restless night by a duvet-stealing partner can make them see red, and one in six have even ended relationships over it.
Steve Reid , CEO of Simba, said: "Duvet stealing is a sore subject among British couples - a bedroom habit that's the catalyst for hundreds of arguments.
"Combine this with a healthy dose of festive season stress for good measure.
"Whether it's the pandemonium of having everyone under one roof, keeping the house tidy or the pressure of cooking, each can keep us from being our usual calm, well-rested selves.
"We thought it could be fun to explore how we me might put some of these tensions to bed."
Computer-generated images show the bed - dubbed the 'Duvet Diplomat' - is also geared up to appeal to interiors aesthetes and cleaning enthusiasts, with a remote controlled 'self-making' function.
Motorised rotary irons within the bed base automatically revolve the duvet, pressing and steam-cleaning it simultaneously.
The bed is currently in the design stage to test feedback from consumers.
Steve Reid added: "When you sleep better, you are more likely to make better decisions, take less risks and start the day in a more positive and peaceful frame of mind.
"So, for those who can't wait for a futuristic sleep solution like the Duvet Diplomat, Simba's temperature-regulating Hybrid Duvet with space-inspired Stratos technology has everything you need to prevent sleepless nights this Christmas."
Simba's study of 2,000 adults found duvet-stealing, coming home to an unmade bed and snoring are among the things that send tempers soaring between British couples.
A third are infuriated by 'blanket bandit', three in 10 feel tensions rise when they come home to an untidy bedroom or unmade bed.
And one in five have argued with their partner about their inability to make the bed in the morning.
Four in five adults also cite that one of life's most simple pleasures is getting into fresh bedding, yet one in five never wash their duvet.
The explosion of aspirational interiors on social media has fuelled Brits' appetite for 'Instagram-friendly' homes.
It also emerged one in four adults feel social media has inspired them to try and achieve a more boutique-hotel-style bedroom, with a neat aesthetic.
And 75 per cent said a tidy and stylish bedroom environment makes them feel happier and more peaceful than more chaotic d cor.