<text>  A quarter of us suffer from Sunday night insomnia and its all down to our fears of starting a new working week. Even commuting causes fretful nights, with 10 per cent of Britons too worried about their journey to work on Mondays to enjoy a proper nights rest, a study has found. On average, Britons manage just six and a half hours sleep a night, which is far less than the recommended eight hours. More than half only get four hours sleep or less. A quarter of Britons suffer from Sunday night insomnia as we are too scared to start a new working week . The study, carried out by the Tune Hotels Group, reveals a nation suffering from a sleep deficit due to the anxieties about the start of a new working week. Jason Ellis, Professor of Sleep Science at Northumbria University, said: As a general rule, the average person needs around eight hours sleep a night to feel the full restorative benefits. This is particularly true of people who have very physically or mentally challenging jobs. Sunday-somnia is something I see a lot and its important that people deal with the issues surrounding their sleep deprivation so that it doesnt have a knock on effect on sleep later in the week. Commuting to work causes 10 per cent to have a restless sleep on Sunday night ahead of work the next day . 