Questions tagged [sleep]

Sleep is a naturally recurring state characterized by reduced or absent consciousness, relatively suspended sensory activity, and inactivity of nearly all voluntary muscles. It is distinguished from quiet wakefulness by a decreased ability to react to stimuli, and is more easily reversible than being in hibernation or a coma.

Filter by
Sorted by
Tagged with
25
votes
0answers
977 views

Does radiation from sleeping next to your smartphone affect your brain patterns negatively?

Vivian Giang writes in Sleep Drives Metabolite Clearance from the Adult Brain: In fact, as part of Swart’s Neuroscience For Leadership class at MIT in April, she discussed the serious health ...
0
votes
1answer
575 views

Does Lee Hadwin have “artistic ability” only when asleep?

The artist Lee Hadwin claims that he paints only when he is asleep and has no artistic talent when he is awake. A dailymail article about his gallery opening: An artist who has no artistic ability ...
50
votes
3answers
9k views

Does the color temperature of a computer screen affect sleep patterns?

There's a little tool called f.lux that claims: During the day, computer screens look good — they're designed to look like the sun. But, at 9PM, 10PM, or 3AM, you probably shouldn't be looking at ...
1
vote
0answers
64 views

Does blue light from screens (phone, computer, TV) before sleep affect sleep? [duplicate]

One claim I come across again and again and again in some form is this: Blue light from screens before sleep affects the production of melatonin in your body therefore it's harder to fall asleep (...
24
votes
2answers
3k views

Does learning immediately before going to sleep increase the effect?

I have read now several times as a "secret tip" that learning directly before going to sleep significantly increases the effectiveness of learning, probably the long-term memory when, for example, ...
2
votes
1answer
719 views

Is sleep “defragmentation” for your brain?

I've seem several articles claiming that sleep is akin to the usual proccess of hard drive defragmentation, however for your brain. This process allegedly prunes synapses/memories and reconsolidate ...
60
votes
4answers
7k views

Do you eat a certain number of spiders whilst you sleep?

Over the course of your life time, the average person eats X spider/insects/whatever whilst they are sleeping. X tends to vary according to who you ask. Is this just an urban legend?
1
vote
1answer
451 views

Do water pillows improve sleep quality?

The manufacturer of a water-filled pillow claims: In a published study from The Johns Hopkins School of Medicine, The Water Pillow by Mediflow was clinically shown to improve quality of sleep and ...
7
votes
1answer
374 views

Does Earthing Therapy reduce cortisol secretion and help sleep?

Earthing Therapy involves "earthing" and "grounding" the human body by electrically connecting it to the ground. In the book Sleep Smarter, by Shawn Stevenson, he claims there is research that says ...
87
votes
2answers
20k views

Does polyphasic sleep work? Does it have long-term or short-term side effects?

Cutting sleep down to 6, or 4, or 2 hours per day sounds fantastic. It also sounds like something that should have evolved naturally if it were possible. From the Polyphasic Society: Humans are ...
18
votes
3answers
2k views

Is sleep training a form of neglect or harmful?

Some people claim that "crying it out" is harmful. For example, the article on PhD Parenting states that crying it out is harmful to a child. I've heard others suggest that it's neglectful. I expect ...
11
votes
0answers
3k views

“Relax and Win” - Classified military method to fall asleep quick?

The book Relax and Win by Bud Winter (a track coach) claims to reveal relaxation techniques developed by him and others for the US military: Based on mental and physical training methods used to ...
5
votes
0answers
304 views

Are people who sleep on the left side of the bed happier in their job?

According to a 2011 study by hotel chain Premier Inn, people who sleep on the left side are better off than those who sleep on the right side. One of the examples they give: In fact, 31% of ‘...
14
votes
3answers
2k views

Is charging your phone overnight dangerous?

There are a number of news stories like this (in Russian) of an iPhone 5 burning up and causing a fire while charging overnight, seriously damaging the owner. There's another story going around of a ...
25
votes
2answers
3k views

Is it possible to induce a lucid dream?

I've seen some websites like this that guide you to lucid dreaming, but still wondering is this just a myth? I tried to search for Lucid Dream but there seems like no result about people who sharing ...
0
votes
0answers
143 views

Does your wifi router mess up your melatonin which messes up your sleep? [duplicate]

From https://www.kitguru.net/channel/generaltech/larry-alton/3-reasons-to-upgrade-your-network-with-cat6a-ethernet-cables/ If you’re one of thousands of people who suffer from EMF sensitivity, ...
6
votes
1answer
855 views

Does the “4-7-8” method help to fall asleep faster?

The "4-7-8" technique involves controlling your breath for a brief time to encourage falling to sleep faster. Each number consists of the period of seconds you spend during a certain part of ...
12
votes
1answer
947 views

Is there any correlation between sleeping position and personality?

I've read in various news sites (1, 2, 3) that sleeping position correlates with personality. Most go as far as describing what personality traits are linked to each different position but no mentions ...
2
votes
0answers
285 views

Does orientation relative to the Earth's magnetic poles affect humans during sleep? [duplicate]

So generally in India they told you, you should not put your head to the north and sleep. [...] Suppose you are anemic and you go to your doctor what does your doctor prescribe for you? Iron. ...
12
votes
1answer
2k views

Does sleeping on your left side, while pregnant, improve blood flow?

According to babycenter.com and countless other pregnancy sites and youtube videos, women should sleep on their left side while pregnant to improve blood flow to the fetus: Sleeping on your side is ...
9
votes
1answer
2k views

Is it healthy to sleep with the head under the blanket?

According to g9sleeptight.com (and many other websites), sleeping with the head under the blanket increases the risk of suffocation can trigger sleep apnea can cause brain damage stating "some ...
17
votes
1answer
4k views

Does drinking warm milk help people fall asleep and if so what is it about it that does?

I always thought drinking warm milk before going to bed helps one fall asleep. According to Dr.Oz's friend, it does Dr. Oz talked with a sleep expert who said warm milk will help you fall ...
6
votes
1answer
760 views

Does it take 30 seconds for a person to consciously realize that they're awake?

Source: "You actually have to be awake for a full 30 seconds to consciously realize that you are awake, but the body falls right back into sleep immediately after it wakes up to take a breath," ...
25
votes
1answer
3k views

Can you tell if you're dreaming by pinching yourself?

Just yesterday I read how Tyrion tries to figure out if he's sleeping by pinching himself. And this seems to be a commonly held truth which often comes back in tales. But I'm not so certain. So can ...
19
votes
2answers
882 views

Does reading off a self-luminous tablet impact the quality of sleep?

I've heard claimed many times that reading an iPad in bed makes for worse sleep quality than reading a book or a Kindle with a bedside lamp, Possible explanations I've heard are because of the ...
3
votes
0answers
474 views

Is there a risk to sleeping in a hammock long-term? [closed]

There seems to be very little research on long-term health or spine drawbacks to sleeping in a hammock (anything besides individuals informal blog-type posts). Just one study about sleeping in a ...
7
votes
3answers
1k views

Do ultra-heavy blankets reduce stress and anxiety?

There's some buzz on news sites that seems to come from an article here: Scientists Assert That Ultra-Heavy Blankets Actually Reduce Stress and Anxiety which I think is connected to a Kickstarter ...
21
votes
2answers
2k views

Do memory foam mattresses help reduce back pain?

Memory foam and related products have claims like TEMPUR Mattresses create a custom fit for your body, virtually eliminating painful pressure points and reducing your body’s need to toss and turn ...
3
votes
1answer
9k views

Is sleeping on airbeds unhealthy?

I have often heard from people that sleeping on airbeds is not good for health, reasoning that it is filled with air and molds to the shape of our body, so cannot provide enough support for the back. ...
1
vote
0answers
167 views

Is the microorganism buildup in bedsheets harmful?

According to business insider, the New York University microbiologist Philip Tierno claims that bedsheets should be washed once a week and that mattresses should be changed more frequently because ...
60
votes
1answer
8k views

Do teenagers fall asleep and rise up later than kids or adults for biological reasons?

In a TED talk "Why school should start later for teens", Wendy Toxel made an assertion that teenagers naturally fall asleep and rise up a couple of hours later than children OR adults (related to ...
24
votes
1answer
9k views

Are there people who do not sleep at all?

There have been reports about people who didn't sleep at all for many years, see e.g. this newspaper article. The case of Paul Kern is the subject of this Wikipedia article, and this newspaper article....
35
votes
2answers
5k views

Death by lack of sleep — is it possible?

I had an argument with a friend in college who claimed that it was possible to remain awake with little to no detrimental affects for an arbitrarily long period of time. I am wondering, has anybody ...
9
votes
0answers
373 views

Do salt lamps produce negative ions?

Do claims that Himalayan Salt Lamps produce negative ions when lit with an incandescent bulb have any science to back it up?
1
vote
1answer
361 views

Do we need less sleep when the Sun is shining at night?

I always bring black plastic sheets with me when going North in the Summer to make my bedroom pitch dark, but the local people seem to not be bothered by the Sun at night. However, they do say that ...
17
votes
1answer
1k views

Can anyone function on just 2 hours sleep per night?

This infographic advert describes the sleeping habits of a few well-known people: A few of them were claimed to have gotten by with extremely little sleep. For example: Tesla, 2 hours of sleep per ...
29
votes
1answer
6k views

Has “the destruction of the space shuttle Challenger… been linked to insufficient sleep”?

According to Daylight Savings Time and Traffic Accidents N Engl J Med 1996; 334:924-925 Major disasters, including the nuclear accident at Chernobyl, the Exxon Valdez oil spill, and the destruction ...
5
votes
2answers
401 views

Does Daylight Savings Time lead to an increase in car accidents and work related injuries the week afterwards?

In the segment Daylight Saving Time - How Is This Still A Thing? of John Oliver's Last Week Tonight it is said: Studies say that there's an increase in car accidents and work related injuries the ...
12
votes
2answers
2k views

Could this monk have lived nine days without food, water and sleep?

All over the news this week in Japan has been this story about a monk: A Buddhist monk on Wednesday finished a grueling nine-day ritual of not eating, drinking, or sleeping as he chanted sutras 100,...
2
votes
1answer
282 views

Can alcohol trigger insomnia?

Refer to the article How a glass of wine before bed wreaks havoc with your sleep: Alcohol disrupts body's internal timer and triggers insomnia: While glass of wine at night may help you drop off, ...
25
votes
1answer
10k views

Do side sleeping postures contribute to breast sagging?

CNN claims that sleeping on your side and sleeping on your stomach can lead to saggy breasts. Sleeping on your side can cause you to get wrinkles," Glaser says. Blame all that smushing of one side ...
14
votes
1answer
2k views

Is it possible to drive while sleepwalking?

I recently watched a movie called In My Sleep where the character allegedly is able to drive and even have sex while he is "sleepwalking." Marcus struggles with parasomnia, a sleepwalking disorder ...
11
votes
0answers
318 views

Can audio played during REM sleep improve recall?

I was reading about sleep-learning - for example of the type depicted in The Simpsons episode, Bart's Friend Falls in Love: Homer orders a subliminal cassette tape to help him lose weight, but is ...
2
votes
0answers
378 views

Is it possible for a working person remain healthy just by 4 hours sleep a day? [closed]

Due to work pressure, I'm feeling that 24 hours is not enough to finish it in deadline. I've tried it for two days but felt impossible. I'd heard that successful person do not sleep long. I don't know ...
12
votes
0answers
259 views

Does drinking water right after waking up reduce sleepiness?

Related but with no answers (at the time of this posting). Several websites and "health tips" blogs recommend doing this after waking up to reduce sleepiness after waking up. (references, google ...
2
votes
0answers
100 views

Does a boxspring offer advantages over slats? [closed]

Does a boxspring under a mattress offer advantages over flexible slats? I can imagine a boxspring might seem more luxurious since it feels more soft, but that doesn't mean that it supports your body ...
17
votes
1answer
1k views

Do expensive mattresses give better quality of sleep?

I'm currently shopping for a mattress, and prices range from $200-$2000+. My current mattress is a $500 IKEA memory foam mattress, and I feel like I get a good night's sleep, but if it could be shown ...
5
votes
1answer
1k views

Will sleep deprivation kill you faster than starvation?

This article from Time Motto makes the claim that sleep deprivation will result in faster death than starvation. In the long run, work is not more important than sleep. If you aren’t sure how ...
11
votes
1answer
6k views

Do sharks never sleep?

My friend was saying that shark never sleeps. Because to keep it afloat, it has to continuously swim, so that it can't sleep. This claim is repeated in the Ocean of Know: They certainly need to ...
7
votes
1answer
607 views

Do sleeping pills have a comparable mortality hazard ratio as cigarette smoking?

On Seth Robert's blog, Seth published an email discussing sleeping pills from Daniel Kripke saying: Imagine my surprise when I observed that sleeping pill use was associated with a comparable ...