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Believe it or not, there is such a thing as getting too much sleep. While the occasional lie-in is generally harmless, you should watch out if you find yourself needing more than 10 or 11 hours of sleep a night over an extended period of time.
"Sleep is good for your health, and a lack of sleep is linked with many health conditions," says Dr Shirley Kwee, a general practitioner from Raffles Medical in Singapore.
"But the opposite can also cause multiple health issues, such as an increased risk of diabetes, obesity and heart disease, and can be indicative of an underlying medical or psychological condition.
"Studies have shown that people who oversleep have a 38 per cent higher risk of cardiac disease. It is also linked with higher rates of depression and lethargy," Kwee says.