The claim by some people that they can get by on five hours of sleep was among the top myths researchers were able to dispel based on scientific evidence.
This myth also poses the most serious risk to health from long-term sleep deficits, said the study published online in Sleep Health journal on Tuesday.
"Dispelling myths about sleep promotes healthier sleep habits which, in turn, promote overall better health," she added.
To reach this conclusion, researchers reviewed more than 8,000 websites to identify the 20 most common assumptions about sleep.
With a team of sleep medicine experts, they ranked them based on whether each could be dispelled as a myth or supported by scientific evidence, and on the harm that the myth could cause.
Another common myth relates to snoring.
The authors encourage patients not to dismiss loud snoring, but rather to see a doctor since this sleep behaviour may lead to heart stoppages or other illnesses.
The study authors also found sufficient evidence that, despite beliefs to the contrary, drinking alcoholic beverages before bed is indeed unhealthy for sleep.
Robbins and her colleagues suggest creating a consistent sleep schedule and spending more time, at least seven hours, asleep.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)