Zoë Foster Blake refusing to share bed with her husband Hamish is part of a growing trend of 'sleep divorce' among Australian couples

Comedian Hamish Blake stunned fans last week when he revealed his sleeping arrangements with his wife, Zoë Foster-Blake.

The couple admitted that they do not sleep in the same bed, with beauty mogul Zoë 'uninterested' in sharing a bedroom with her husband of 14 years. 

And while the couple's separate sleep schedule raised some eyebrows, it's part of a growing trend among Australians. 

Called a 'sleep divorce', the arrangement involves couples, often married, who opt not to share a bed in order to get better rest. 

Recent studies, including from the Sleep Health Foundation, show that between 18 and 24 percent of Aussie couples have consciously chosen not to sleep together at night. 

While many feel that sleeping apart could be a sign of marriage troubles, Relationships Australia NSW practitioner Naomi Doyle says that it isn't usually the case. 

'Sleeping separately is framed as a relationship issue but it's usually, before that, a sleep issue,' Doyle told ABC news.  

Doyle details issues like 'sleep apnoea and snoring - especially if the other person is a light sleeper' as key motivations for a sleep divorce. 

'Also movement, someone could be restless, or have a different sleep schedule, like someone is a shift worker,' she added. 

Doyle said that couples often try the arrangement temporarily and continue when they realise they 'love it'. 

Sleep expert Olivia Arezzolo told Yahoo Lifestyle that the 'sleep divorce' is more common than people may think.

'Years ago [sleep] was an afterthought. Now, it's a key priority,' Arezzolo said.

'We are aware it has a significant impact on how we show up the next day.'

Hamish admitted that he and Zoë, 46, do not sleep in the same bed during an appearance on The Mitch Churi Chat Show last week. 

The 44-year-old funny man said he gets his forty winks in the spare room of their multimillion-dollar Sydney home because their daughter Rudy often climbs into bed with the couple and Zoë has 'no interest in that'.

'I actually sleep in the spare room at our house, just due to noise management issues,' he said.

'My wife has no interest in that and is happy to sacrifice her husband to put me in the firing line of being the parental company,' he joked.

Hamish went on to describe his sleeping quarters as being like 'student accommodation' while his wife, who is the CEO of popular beauty brand Go-To, rests her head in the main bedroom on the 'The Executive Level' of their home.

'Upstairs is called The Executive Level, which is lovely for management, and I’m on The Employee Level,' he joked.

'Sometimes the boss does visit. Very rarely do we have the guts to go and visit the CEO because she could be asleep and we don’t want to wake her up.

'Our job on the employee level is just to keep it down at all times.'

Hamish and Zoë have been happily married since tying the knot in 2012 and are doting parents to two children - Sonny, 12, and Rudy, eight.