Sheffielders are the worst "morning people" in Britain, according to a new survey.
Just 15 per cent of people living in the city wake up feeling refreshed each day, according to the study, putting Sheffield at the top of the table for when it comes to having a bad night's sleep.
It was followed by Cardiff (18 per cent) and Edinburgh (19 per cent).
Conversely, those in the UK most likely to seize the day lived in Bristol where 31 per cent said they wake up feeling refreshed.
Some 30 per cent of Brighton people reported the same and 29 per cent of those living in Nottingham also got a better night's sleep.
The study also revealed that British women lose more than a week's worth of sleep each year, according to the world's largest ever sleep census.
On average, women in the UK miss out on 56 minutes of shut eye every night - precisely double that of men.
This equates to a staggering ten days a year of missed sleep for women and five for men - which could lead to obesity, type 2 diabetes and depression, experts say.
Researchers from Loughborough University and bed manufacturer Sealy UK polled more than 15,000 respondents across the globe, with participating countries including China, South Korea, Australia and South Africa.
Their findings revealed the contrasting sleep patterns between the Eastern and Western worlds.
However, they also found a worldwide sleep debt - the perceived amount of shut eye people think they need minus what they actually get.