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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.

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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 ...
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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 ...
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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 ...
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Does using the computer before sleeping affect sleep patterns?

According to this Bloomberg Businessweek article using electronics before bed may hamper sleep. Is it true that using a computer, watching T.V. or using some other type of face-to-screen electronics ...
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Do bullfrogs sleep?

Today I came across this picture: So I searched a bit about it. In this wiki answer it is stated that: Bullfrogs do sleep. They sleep underground from 2- 4 weeks. Sounded ok, but in this website, ...
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Do memory foam mattresses cause inflammation?

According to a competitor, [...] the visco memory foam mattress cuts off circulation and increases inflammation. This is in keeping with my personal experience of inflammation. Is that just an ...
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Is “co-sleeping” (infant sleeps in bed with parents) safe?

Among some circles, co-sleeping is highly advocated for newborns/infants due to ease of breastfeeding and potential developmental bonding to the mother (for more examples, read about proposed ...
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Can a hypnosis audiobook induce epileptic seizures?

I noticed a warning on a hypnosis/self-help audiobook that read as follows: Warning: This audiobook contains powerful techniques. Do not listen if you suffer from epilepsy. My inclination is ...
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Does sleeping on your left side improve digestion?

Does sleeping on the left side improve digestion? This article claims that it does, is there any truth to it? http://www.healthylifetricks.com/this-is-why-you-should-be-sleeping-on-your-left-side/ ...
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639 views

Are organic mattresses healthier than the alternatives?

Some stores sell "organic mattresses" or "non-chemical" mattresses (consisting of 'all-natural' latex, as if latex were not a chemical) for children. Example Example Some of them make health claims, ...
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1answer
460 views

Does the hops in beer cause sleepiness?

Does the hops in beer have (a consistent and noticeable) effect on drowsiness? Whenever I drink a beer, I get so sleepy that I can barely keep my eyes open. Is it the hops? It can't be the just ...
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864 views

Does eating dark chocolate eliminate night terrors?

In answer to a question on Parenting.SE about helping a child cope with night terrors, a user posted: Here's what you do For the little guy. For his night terrors give him 1 to 2 small square of ...
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Is there a connection between sleep patterns and meat-eating?

There are a number of different and sometimes contradictory claims that changing your diet (especially with regard to avoid meat) can have an affect on your sleeping pattern. Here are a few related ...
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Does sleeping in a cold room reduce the risk of diabetes?

According to Elite Daily, there may be some health benefits to sleeping in a room at between 60-67°F (15-19°C) In particular, they cite Temperature-acclimated brown adipose tissue modulates ...
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Do women need more sleep than men?

The claim is that women need more sleep than men because they do more multi-tasking during the day. http://www.dailymail.co.uk/health/article-2528920/Women-DO-need-sleep-men-Multi-tasking-means-...
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Should you regularly replace your pillow?

According to an article in the Guardian: Out of 2,200 men and women, only 18% knew they should replace their pillows every two years. The average person uses the same pillow for three years and two ...
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Is it better to sleep before midnight?

My father and I couldn't be more different when it comes to sleep. I rarely go to bed before midnight, while he will often retire around 9:30. While growing up, we'd often get into discussions on the ...
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Do adults sleep better when they sleep alone?

Newyorker: Research studies consistently find … that adults “sleep better when given their own bed.” Is that an accurate assessment? Do adult sleep better when they sleep alone rather than with their ...
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Is it better to wake up in between sleep cycles than during one?

I saw this cute online sleep calculater. They claim (put in any time, and you'll see it): Sleep cycles typically last 90 minutes. Waking up in the middle of a sleep cycle leaves you feeling ...
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Were our ancestors segmented sleepers?

Historian A. Roger Ekirch contends that in ancient times, people naturally had two sleeping periods at night- the first starts shortly after sundown and ends in an short break, where people were semi-...
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How did people sleep in the past? [duplicate]

Recently I was told by a friend: People used to sleep in two shifts, one from 8pm to midnight, then wake up for an hour or two, before taking a second sleep shift from 2am to 6am. He claims that ...
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Which position is healthiest for sleep?

If you believe the internet, there is no healthy way for you to sleep: front, back, side, fetal; they are all going to cause you problems like acid reflux, spinal problems, skin problems, problems ...
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1answer
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Does excessive menthol cause sleepiness?

Does over consumption of menthol cause sleepiness? I found no substantial sources either to suport or refute this argument. I have heard it from a few sources not perfectly reliable. I do know that ...
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Can mobile apps monitor your sleep cycles?

There's already been a question about devices that can help you monitor your sleep and their possible benefits, but I'm interested specifically in the apps for mobile devices that claim to be able to ...
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Do 7 to 12 year olds need 10 to 11 hours of sleep per day?

WebMD: 7-12 Years Old: 10 - 11 hours per day At these ages, with social, school, and family activities, bedtimes gradually become later and later, with most 12-years-olds going to bed at about 9 ...
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Are intelligent people more nocturnal than people not considered intelligent?

Some sites claim that people with higher intelligence tend to go to bed later. For example: People with higher IQs are more apt to be nocturnal night-owls. Those with lower IQs tend to restrict ...
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While driving (or otherwise), do people experience microsleep and are unaware that it happened?

From Wikipedia (emphasis mine): When experiencing microsleeps while driving an automobile, from the perspective of the driver, he or she drives a car, and then suddenly realizes that several ...
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If you put your hand in water while sleeping/drunk, will you pee yourself?

This is like an urban myth and a classic prank, but I never saw it in action. Supposedly if someone is passed out or sleeping, the contact with water will make him pee. Is this true? If true, why ...
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Is shared dreaming possible?

Mutual dreaming or shared dreaming is the claim that two or more people can share the same dream environment. I have experienced a numerous lucid dreams but I've never met a known person in such ...
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1answer
23k views

Is sleeping on your left side bad for your heart?

I have been presented with the following conundrum. Either you sleep on your back and snore, or sleep on your right side and get acid reflux, or sleep on your left side and put a heavier load on your ...
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Is it impossible for a human to feel pain in a dream?

I am absolutely sure that humans can feel emotions in a dream. I've experienced some of the strongest anxiety in my life during nightmares. Sometimes the emotions were strong enough to persist in the ...
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1answer
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Does white noise improve sleep quality?

I've heard it claimed that white noise improves sleep quality, and anecdotally I've found it to sometimes be true. There are many white noise devices targeted at improving sleep, but research on the ...
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Can I add around 10 years of wakeful time to my lifespan by practicing polyphasic sleep vs. an average Western lifespan? [duplicate]

I have read from various (low quality) sources that practicing polyphasic sleep would add around 10 years to my lifespan vs. an average Western lifespan. Polyphasic sleep refers to the practice of ...
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Can a raw-food diet allow someone to “switch” from one side of his brain to the other when he gets tired?

The following article relates this claim by someone who stayed awake for 11 days: How can someone stay awake for 11 days? He also employed a unique raw-food diet. Wright claims that his regimen ...
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1answer
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Does the average human take 14 minutes to fall asleep?

I saw this cute online sleep calculator. They claim (put in any time, and you'll see it): The average adult human takes fourteen minutes to fall asleep, so plan accordingly! Is this correct?
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Do “blue light therapy” systems help with sleeping disorders?

I've seen blue light therapy systems which just look like a bunch of LED blue lights being sold online and in stores. They claim to help with sleeping disorders and jet lag. How are they supposed to ...
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1answer
564 views

Do humans sleep better in darkness?

Do humans (and I guess also most creatures) sleep better in darkness?
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157 views

Do intelligent people tend to stay up later? [duplicate]

I heard that people with high IQs stay up late. I found this article which in turn refers to this study: S. Kanazawa, K. Perina, Why night owls are more intelligent, Personality and Individual ...
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547 views

Does eating cheese help one to fall asleep or have a sound sleep?

Does eating cheese help one to fall asleep or have a sound sleep? According to Dr. Oz it does: Cheese and 100% whole grain crackers are your best bedtime-snack bet. The whole grains help produce ...
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2answers
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Do memory foam mattresses give off toxic fumes?

I recently purchased a memory foam (polyurethane) mattress and was looking online to see how long they take to "air out". They produce a strong odor for awhile after manufacture. However, instead of ...
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1answer
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Did Albert Einstein sleep 10-11 hours daily?

I heard many times that Albert Einstein needed a lot of sleep. For example, this BBC article claims that he typically needed eleven hours of sleep: People's sleep needs can differ significantly. ...
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1answer
670 views

Does the phase of the Moon affect human sleep patterns?

From The Economist - "Lunacy? People do not sleep easy on nights when there is a full Moon": And the answer was “yes”, the phase of the Moon does affect human sleep patterns, even when the human ...
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2answers
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Can devices detect your sleep cycle and wake you in a more refreshed state?

There are a number of products on the market that claim to be "better alarm clocks" that allows you to feel more refreshed when you wake - even if you sleep a few minutes or tens of minutes less. ...
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2answers
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Are any animals nocturnal? [closed]

Several animals are commonly considered to be 'nocturnal' by nature. Nocturnality is an animal behavior characterized by activity during the night and sleeping during the day. The common adjective ...
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Is sleepiness after a goods night's sleep a sign of dehydration?

If you still feel tired after a good night's sleep, you're probably dehydrated. Drink some water after you wake up. — Just So You Know (@Know) April 22, 2013 Some quick searching unsurprisingly ...
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Can you snore and dream at the same time?

According to numerous sources on the internet, you cannot snore and dream at the same time. Source 1 If you are snoring, then you cannot be dreaming. This fact is repeated all over the Internet,...
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1answer
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Does eating just before sleeping cause nightmares?

In many cartoons and on Sesame Street there are many storylines where a character eats just before going to bed (usually pizza) and they end up having nightmares or very crazy vivid dreams. Normally ...
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Do teddy bears help people go to sleep better?

There are so many kids in this world who go to sleep with teddy bears and dolls. It seems like they need these toys to go off to Dreamland. I just recently realised this because my own child, about ...
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0answers
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Can irregular sleeping hours cause developmental issues for the brain?

It seems to be a common belief (i.e. here) that in order for our brain to rest and grow properly, we need to have regular, maintained sleeping regimes. While there seems to be no doubt that sleeping ...
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1answer
618 views

Why does small amount of night time sleep makes a person more tired when he wakes up? [closed]

Assume that you go to sleep at 0:00 am and wake up at 3:00 am. Why do you feel more tired (compared to your tiredness at 23:59) when you wake up at 3:00 am? Why does sleep makes us more tired in this ...