16 Surprising Sleep Myths And Facts You Didn t Know

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[/health/sleep/ Sleep] is complex, tour đài loan interesting, abstruse and sometimes just weird. Isn't it strange that we all fall into a slumber for several hours each night? What's especially strange is that sometimes [/health/sleep/ sleep] comes easy and sometimes it [/health/insomnia-what-causes-it-and-how-many-of-us-have-it/ takes hours to fall asleep]; sometimes you [/health/how-to-sleep-through-the-night-stop-waking-up/ toss and turn] and sometimes you wake up in the same position you started in. Sometimes you remember your [/health/what-your-dreams-actually-mean-dream-symbols-interpretation-and-causes/ dreams] and sometimes you don't. Those aren't the only weird things about sleep -- these quirky sleep facts will make you raise an eyebrow. 
Read more: [/health/best-mattress/ The best mattress for 2020: Casper, Nectar, Purple and more]
Myth: If you remember your dreams, it means you slept better
Many people believe that remembering their dreams means they had a good night's sleep. That's not necessarily the case, says Ariel Garten, co-founder of [ Muse], tour đài loan a neuroscience and meditation company. People actually remember dreams when they're woken up during them, she says, which indicates poorer sleep. It also has something to do with sleep stages: You're more easily woken up during [ ], which is when dreams happen, Garten says. 


Remembering your dreams doesn't always mean you slept better.

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Myth (sort of): You can die from not sleeping
It's [ unlikely] for sleep deprivation to be a cause of death, but sleep deprivation can increase your chances of death because of effects like immune system suppression and increased risk of vehicle accidents. There is one medical condition linked to death from sleep deprivation called "[ fatal familial insomnia]," which involves degeneration of the central and autonomic nervous systems, but this condition is [ genetic and extremely rare]. 

In the past, gamers have died during gaming marathons of 20-plus hours, but their deaths are usually attributed to something else -- not sleep deprivation -- such as one gamer in Taiwan who [ died of cardiac arrest during a gaming marathon]. In other cases, the [ cause of death isn't specified].




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Fact: Dreams are like file cabinets for your brain
When you dream, your brain processes, stores and trashes information.

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Dr. Shelby Harris, a licensed psychologist board-certified in behavioral sleep medicine, tells CNET that dreaming is your brain's way of filing away important tidbits of information for later. "A lot happens during the day, and our brains have a clear-cut way of trying to figure out what to make a file to have for the future, should we need that info again," she says. 

"Dreaming is the brain's way of consolidating emotions, memories and cognitive experiences into a nice, neat file and shredding what we don't need," Dr. Harris explains. "While dreams are often jumbled, pieces of them tend to represent what might be going on." 
Fact: Humans didn't always sleep in one chunk of time at night
Humans used to engage in [ biphasic sleep], or two sleep "shifts" rather than one long chunk of sleep. Some anthropologists and historians believe the invention of electricity and increasingly standardized work and school schedules (i.e., 8-hour days, [ as originally stipulated by social reformer Robert Owen]) influenced our current sleep behavior. 

Single-phase sleep wasn't always a thing.

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Fact: Deep sleep cleans your brain
Every time you fall asleep, your brain takes a shower -- in a sense. During sleep, your brain [ "washes away" toxins and waste] by [ flushing cerebrospinal fluid] in and out in a wave-like manner. This process is thought to promote healthy cognitive function, which just adds one more reason to prioritize sleep. 
Fact: Some people can thrive on less than 6 hours of sleep
Researchers have discovered a "[ short sleep gene]" that appears in people who can sleep for just a few hours each night with no ill effects. It's possible that many high achievers, such as CEOs and other leaders, have this gene. 
Fact: Einstein reportedly got 10 hours of sleep per night
[ Take it from Einstein]: Good sleep is key to smarts and success. Unless you're [ Nikola Tesla]. 


Reportedly Einstein liked to sleep 10+ hours a night, claiming his dreams helped him invent. [ #WorldSleepDay] [ pic.twitter.com/JF1vMmpYe9]
— HISTORY (@HISTORY) [ March 16, 2018]














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Fact: More sleep isn't always better
Most sleep research shows that both short and long sleep durations are associated with higher overall mortality, says Annie Miller, psychologist at DC Metro Sleep and tour đài loan từ hà nội Psychotherapy. Oversleeping can lead to [ health complications] just like undersleeping can. "This information can go a long way when people are worrying about not getting enough sleep and how it will impact them long term," she says. 
Myth: You can 'catch up' on missed sleep
Speaking of more sleep, Miller explains that catching up on sleep is a modern fantasy. "Some people try to make up for sleep lost during the week on vacations or holidays, but this doesn't work," she says. "Our brain thrives on habit and routine. If we vary our wake times, we create what's called 'social jet lag' and this actually makes the sleep problem worse."
Fact-ish: Some people dream only in black and white
Older generations reported dreaming in only black and white.

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In 2008, [ a research study] found older adults to dream in black and white more than younger people. Specifically, the paper says adults 55 and older reported dreaming primarily or only in black and white, while people 25 and younger report almost never dreaming in black and white. This might have something to do with exposure to color television because [ in the 1940s], 70% of participants in a study said they dream only in black and white. Or, those people are just "profoundly mistaken" and only [ remember their dreams in black and white].



























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Myth: You shouldn't wake someone who is sleepwalking 
Conventional wisdom tells us to leave sleepwalkers alone to do their thing, as it could be dangerous to wake them. But the National Sleep Foundation says [ sometimes waking a sleepwalker is necessary], such as in cases where the sleepwalker endangers themself or others. If you can, it's best to guide the sleepwalker back to their bed without waking them, the National Sleep Foundation says.  
Fact: Fear isn't the main emotion in nightmares
[ Research shows] that more people report feeling confusion, disgust, guilt and sadness during bad dreams, not fear. [ Anxiety] is also a common emotion people feel during bad dreams and nightmares. 

Scary dreams often involve more confusion than fear.

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Fact: Some people are afraid of falling asleep
[ Somniphobia], also called hypnophobia and sleep dread, is the fear of falling asleep or sleeping itself. Don't confuse this with insomnia, which is the inability to fall asleep. Someone with somniphobia may experience severe anxiety about going to bed. 
Fact: Sleep deprivation is a treatment for depression
While most of us worry about not getting enough sleep, science shows that deliberate [ sleep deprivation can alleviate depressive symptoms]. Researchers don't yet understand the biological mechanisms behind this, but there's [ clearly a link].