A recent survey has found that those who need a lie-in at weekends to make up for lack of sleep in the week, are at more risk of obesity and developing type 2 diabetes.
The study, by a team at the University of Bristol in the UK and Weill Cornell Medical College in Qatar, assessed "sleep debt" - a measure of the difference in the nightly hours asleep on weekdays and at the weekend.
"We found that as little as 30 minutes a day sleep debt can have significant effects on obesity and insulin resistance," said Prof Shahrad Taheri from Weill Cornell.
He added: "Sleep loss is widespread in modern society, but only in the last decade have we realised its metabolic consequences.
"Our findings suggest that avoiding sleep debt could have positive benefits for waistlines and metabolism and that incorporating sleep into lifestyle interventions for weight loss and diabetes might improve their success."
Do you live for a long lie-in on a weekend? For tips on how to get a regular sleep pattern visit our sleep clinic here