0218 GMT November 14, 2019
A team at New York University trawled the Internet to find the most common claims about a good night's kip.
Then, in a study published in the journal Sleep Health, they matched the claims to the best scientific evidence, BBC wrote.
They hope that dispelling sleep myths will improve people's physical and mental health and well-being.
So, how many are you guilty of?
Myth 1: You can cope on less than five hours sleep
This is the myth that just won't go away. Former British Prime Minister Margaret Thatcher famously had a brief four hours a night. German Chancellor Angela Merkel has made similar claims, and swapping hours in bed for extra time in the office is not uncommon in tales of business or entrepreneurial success.
Yet the researchers said the belief that less than five hours shut-eye was healthy, was one of the most damaging myths to health.
"We have extensive evidence to show sleeping five hours or less consistently, increases your risk greatly for adverse health consequences," said researcher Dr. Rebecca Robbins.
These included cardiovascular diseases, such as heart attacks and strokes, and shorter life expectancy.
Instead, she recommended everyone should aim for a consistent seven to eight hours of sleep a night.
Myth 2: Watching TV in bed helps you relax
Have you ever thought "I need to wind down before bed, I'm going to watch some TV"?
Well, the latest Brexit twists and turns on the BBC News at Ten might be bad for sleep.
Robbins argued: "Often if we're watching the television it's the nightly news… it's something that's going to cause you insomnia or stress right before bed when we're trying to power down and relax."
The other issue with TV — along with smartphones and tablets — is they produce blue light, which can delay the body's production of the sleep hormone melatonin.
Myth 3: If you're struggling to sleep, stay in bed
You've spent so long trying to nod off you've managed to count all the sheep in New Zealand (that's about 28 million).
So what should you do next? The answer is not to keep trying.
"We start to associate our bed with insomnia," said Robbins.
"It does take the healthy sleeper about 15 minutes to fall asleep, but much longer than that… make sure to get out of bed, change the environment and do something that's mindless."
Her tip - go fold some socks.
Myth 4: Hitting the snooze button
Who isn't guilty of reaching for the snooze button on their phone, thinking that extra six minutes in bed is going to make all the difference?
But the research team said that when the alarm goes off, we should just get up.
Robbins said: "Realize you will be a bit groggy — all of us are — but resist the temptation to snooze.
"Your body will go back to sleep, but it will be very light, low-quality sleep."
Instead the advice is to throw open the curtains and expose yourself to as much bright light as possible.
Myth 5: Snoring is always harmless
Snoring can be harmless, but it can also be a sign of the disorder sleep apnea.
This causes the walls of the throat to relax and narrow during sleep, and can briefly stop people breathing.
People with the condition are more likely to develop high blood pressure, an irregular heartbeat and have a heart attack or a stroke.
One of the warning signs is loud snoring.
Robbins concluded: "Sleep is one of the most important things we can all do tonight to improve our health, our mood, our wellbeing and our longevity."