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Why Aren’t Humans Naturally Nocturnal?

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Our bodies depend on light and dark for optimal sleep patterns. Here's why sleeping with the lights out is more important that you think.
Why Do We Yawn? - bit.ly/28SDDts
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Read More:
Lights Out For A Good Night's Sleep
sleepfoundatio...
"How many times have you fallen asleep with the lights, or television on, or even stayed up late to use your computer right before going to bed?
A key factor in regulating sleep and your biological clocks is exposure to light or to darkness so falling asleep with lights on may not be the best thing for a good night's sleep."
Diurnality, Nocturnality, And The Evolution Of Primate Visual Systems
www.ncbi.nlm.ni...
"Much of the recent research on the evolution of primate visual systems has assumed that a minimum number of shifts have occurred in circadian activity patterns over the course of primate evolution. The evolutionary origins of key higher taxonomic groups have been interpreted by some researchers as a consequence of a rare shift from nocturnality to diurnality or from diurnality to nocturnality."
You Asked: What's The Best Bedtime?
time.com/318318...
The earlier the better? 11 PM? Sundown? Sleep experts say it's not that simple. But there is a time range you should shoot for if you're questing for a perfect night's sleep.
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Опубликовано:

24 авг 2024

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Комментарии : 763

@1595pie 8 лет назад

so why do i prefer being awake at night? and sleep like a rock during day even when light

@256shadesofgrey 8 лет назад

Because you're better than the rest of humanity. Obviously.

@logictruth1 8 лет назад

You're biologically so mainstream you joined the 80% of creatures who do wake at night.

@1595pie 8 лет назад

+Kazuya Mishima sweet

@bfavs 8 лет назад

I'm a day sleeper also (without sleep mask or closed drapes) but my vitamin D (sunshine vitamin) levels were really low and now I take supplements. Without artificial light I'd probably switch to night sleep.

@MetaMW66 8 лет назад

because you've got no job or responsibilities in the day time must be an exciting life im assuming on minecraft all night livin in large

@dollarstorecoffee 8 лет назад

my body naturally wants to go to bed around 7 AM (it's bright outside where I live), and sleep until 4 PM. During the summer this always happens consistently, despite my efforts to make myself have a normal sleep schedule. Weirdly enough, I *can't* fall asleep until there's light.

@MysticKnight7 8 лет назад

Yep, me too, been this way for a long time.

@ethanpoole3443 8 лет назад

Consider looking into Delayed Sleep Phase syndrome. But you are by no means alone. I find 48 hour days (32-34 up, 14-16 asleep, and I turn in between 7-11am every other day) easier to work with.

@lesrach3 8 лет назад

+Ethan Poole God damn dude, that sounds miserable.

@maul5832 8 лет назад

Yea same. Its 11am rn and I might fall asleep soon lol

@jaquan541 8 лет назад

+Maul pulling all nighters don't count

@TheGreen627 8 лет назад

strange, for some reason i find it more relaxing and easier to sleep with the tv turned on and the volume turn up by just a bit

@chezbro98 8 лет назад

Im exactly the same, weird right?

@stephanieneil7735 8 лет назад

Same

@nickbenkster 8 лет назад

yeah same i think cause of background noise

@leeofthevoid 8 лет назад

some people sleep better with white noise cause it cancels out all other sounds

@burcolclone8322 8 лет назад

It's probably because it distracts you from things that'll make you anxious like waking up early in the morning or things you have to do the day after. I have trouble sleeping at night but pass out on the couch while watching TV or in my phone

@user-wj5gs2wd6i 8 лет назад

i sleep all day and internet all night!

@FocusMrbjarke 8 лет назад

Yes!

@themadcap1898 8 лет назад

😂😂✌

@plantlady42069 8 лет назад

Amen! XD

@emmam837 8 лет назад

Sometimes the warm sun makes me very tired, during school when I ate outside I almost fell asleep a lot. I need my night light because I am terrified of the dark

@wonderz05 8 лет назад

You can eat outside?

@emmam837 8 лет назад

+Wonderz yeah, there is a small area outside but there is not much room out there

@XLHeavyD999 8 лет назад

Your body was processing your food, guess thats why you got sleepy.

@emmam837 8 лет назад

+Alexander Ducaneaux that would make sense, but I can get tired before i even starts to eat

@XLHeavyD999 8 лет назад

Emma M Maby its the same that your mouth makes more suliver just before you go eat. Your brain know you are going to eat and make it ready to receive the food :) Who knows.

@comeplague 8 лет назад

what about creativity? i feel way more creative at night why?

@sidimightbe 8 лет назад

Cuz you the shit

@comeplague 8 лет назад

Sid Dan haha okay

@leafygreenmarie 8 лет назад

bru same! I'm an artist and dancer and it could be 2 am but I'm sculpting and drawing while intervaling at an intense workout and my moms like GO TO BED

@animateseries233 8 лет назад

Interesting I noticed the same thing about myself. I read somewhere that it is almost as if your brain is like an email, filtering out spam during the day time but not at night.

@TLSlimehunter 8 лет назад

same thing here. I get way more creative late at night. Need explanation! Do a video on that Dnews!

@Elistarielle 8 лет назад

Delayed Sleep Phase Disorder/Syndrome. Some of us are nocturnal.

@ethanpoole3443 8 лет назад

It is a shame more doctors are not aware of this syndrome. Only took about 15-20 years before I was diagnosed with the most extreme example of such my former sleep specialist had ever encountered (a very knowledgable specialist in sleep disorders). These days I find 48 hour days (32-34 awake, 14-16 asleep) more conducive to sleep as it also leaves me tired enough to sleep through my chronic pain (fibromyalgia, myofascial pain syndrome). So, from one to another, hello!

@ricofx 8 лет назад

+Ethan Poole wow dude hope they can find a medication to help you to sleep....

@yoitsjamiex8093 8 лет назад

Insomnia. Don't really have a choice.

@grassy6101 8 лет назад

I haven't been diagnosed at all and I have never been able to sleep well during the night. My doctors have said I do have a sleeping disorder but they never look into it so I don't really know what to do.

@MrMbc77 8 лет назад

+Ethan Poole You just described the last 6-7 years of my life. I haven't been diagnosed with the fibromyalgia by a doctor that 'matters' but your sleep cycle is the exactly the same that I seem to fall into, even though I'm constantly pushing myself to have a normal sleep schedule. Had no clue this was even a thing, thanks for the comment.

@cocomomo80 8 лет назад

I'm an insomniac who also suffers from day-night reversal, which means I'm more apt to fall asleep when the sun is out and I feel more energized during the night (my father, lowkey, calls me a vampire); or I don't sleep at all. I've had this reversal disorder for years. When I needed to start doing 1st shift work, the struggle to go to bed at night became all too real.

@ashtonhecker3627 8 лет назад

Maybe 3rd shift work would be better for you if you feel better sleeping during the day and being awake at night :)

@cocomomo80 8 лет назад

TheyCallMePhoenix I used to have a 3rd shift job and it was perfect. But the company eliminated that shift and shrunk it down to 2 shifts only. I've been looking for another 3rd shift job, but they're pretty hard to come by.

@ashtonhecker3627 8 лет назад

+Omo Omo CocoMomo very true. I wish you luck on finding the perfect one for you :) don't give up just keep looking! I'm sure you will find something even more perfect than the first

@cocomomo80 8 лет назад

TheyCallMePhoenix Thanks for the well wishes. I hope I find something soon. :)

@ashtonhecker3627 8 лет назад

+Omo Omo CocoMomo :) anytime

@MosesKaldor 8 лет назад

Most D-news viewers are watching this at 4:30am after a hard night of playing video games (or is that just me?).

@creeperman667 8 лет назад

lol wouldn't be wrong

@noctis8712 8 лет назад

👍

@maul5832 8 лет назад

Man you couldn't be any more right

@joshualacey2065 8 лет назад

well 4am but near enough haha

@GameHed 8 лет назад

truee

@lewissmith5759 8 лет назад

I can totally sleep in the day and wake all night. I just can.

@Lyropimp 8 лет назад

no shit. Its because we can't see shit in the dark

@InMaTeofDeath 8 лет назад

I think the reason we're more inclined to be awake during the day is agriculture. If you're nocturnal you're not going to be awake all day growing the food you need to survive. Hunting works great but you can't stockpile food like you can when you grow it. This way we're awake for the day and a little bit of the night if we need that extra boost of food.

@abbymeehan7739 8 лет назад

The diurnal aspect of our brains developed long before we began farming. We evolved from species at were diurnal themselves, and definitely didn't farm.

@abbymeehan7739 8 лет назад

+Patrick Meehan that*

@ShiggitayMediaProductions 8 лет назад

I've been nocturnal since I was at least 16 and now 15+ years later I work overnight, and I'm used to it. I have no issues sleeping whenever I'm tired, be it day or night.

@bowazowa98production 8 лет назад

The Yawn triggered me.

@commode7x 8 лет назад

#yawntriggered

@AnaMika-so2gn 8 лет назад

This comment triggered a yawn from me

@namelessking1549 8 лет назад

+Anamika C. Same

@yourmomasaurus 8 лет назад

Ugh you made me yawn 😹

@chungdha 8 лет назад

Wonder why I get mega tired when I am sitting in a car, train or bus and just fall asleep super easy even when its sunny.

@StarLover479 8 лет назад

Same. And it takes forever for me to fall asleep on my actual bed quickly.

@gabem4208 8 лет назад

I still can't understand how people can take naps. Even during native in kindergarten I never did

@gabem4208 8 лет назад

whoops nap time not native

@explosivecat1172 8 лет назад

I only take naps when I catch the flu but I find it hard to take naps

@HiThere-we6xh 2 года назад

Makes me feel like animals are around to protect us. Because we sleep while they’re awake. Like shifts. Also correlates when you can also hunt in the day while animals are sleeping.

@bigdickpornsuperstar 8 лет назад

I am a night person. I rarely go to bed before 4 am. Light does not bother me and I can sleep during the day with windows open to the daylight without problem. Sound however.... nope. I need absolute silence (or white noise to drown out the background cacophony) to get any type of a deep, restful sleep.

@jdogsful 8 лет назад

his fake yawn made me yawn.

@hylianmontage451 8 лет назад

Congrats you're not a sociopath .... Probably

@_Carnyx 8 лет назад

your comment made me yawn

@ritvikshandilya 8 лет назад

+Jack Robbo I yawned too

@FocusMrbjarke 8 лет назад

+Jack Robbo this made me yawn

@jdogsful 8 лет назад

youre all making me yawn

@DT-rd5fc 8 лет назад

Next Video: Why Does Food Taste Better After The Day You cook It?

@brandylarsson978 8 лет назад

Not potatoes tho.That shit gets nasty.

@342wru89fsdfdssdf54e 8 лет назад

it doesn't

@schwarzerritter5724 8 лет назад

Soup does.

@midnightshaddow7612 8 лет назад

Pasta, lasangia that type of food tastes better idk about potatoes

@melannysierra1627 8 лет назад

I think chicken taste fucking disgusting the next day but definitely soup tastes x10 better

@perra5910 Год назад

I never liked sleeping in the dark, makes me restless and overthinking. And i always gravitate to sleep just before dawn till noon and just before dusk till evening.

@frozeneternity93 8 лет назад

"They found humans went to sleep just after sunset for awhile, woke up, were active in the middle of the night in the dark, and then slept again" 01:47 ... bom chicka wah wah 😏

@ColinJonesPonder 8 лет назад

Shift worker here. I was up for work at 3am today. Was in bed at 8pm last night. Slept like a log. Very unusual! (still totally knackered when I woke up though) ;)

@absolutenutter1007 6 лет назад

I sleep whenever. Usually it’s more of a half sleep when I’m awake but just lounging around for hours. I get people’s sleep at night but most of the time I’m just lounging around

@mrtielk2000 3 года назад

I am Nocturnal. I sleep during the day way better than i do at night.

@apples2go1 8 лет назад

this is invalid i literally sleep all throughout the day

@Syse 8 лет назад

i think he meant MOST humans, during the summer i sleep from like 8 am to around 4 - 5 pm

@stephanieneil7735 8 лет назад

I can't sleep in the dark if I'm not sleeping beside someone. I have to have a light so I have 2 lamps in my room when I sleep. I also keep my tv on and turned up. I find it easier to sleep with light and electronics. I'm also a night owl. But basically, I'll sleep anywhere.

@candiebarr6745 8 лет назад

Things like this make me feel as though I'm not a normal human. I've never slept much at night. a nap around dinner maybe but I don't usually go to bed until sometime between 4 and 8 am.

@cloverhamilton2453 8 лет назад

I feel constantly tired when there are lights on, but when the lights are very dim/off, I feel wide awake.

@TheMatthewDMerrill 8 лет назад

How are suspected felons allowed to run for president? (My 23rd petition)

@PopeNicholasXVI 8 лет назад

idk Hillary's running right? (just a joke guys chill out)

@pippypenguin 8 лет назад

Because you're innocent until proven guilty

@pippypenguin 8 лет назад

Because you're innocent until proven guilty

@pretentiousred6159 8 лет назад

That's a stupid question. It's because they're not a felon yet, they're only suspected to be one.

@zyzzx2012 8 лет назад

Innocent until proven guilty, this is the USA not some third world country...

@highonnymphetamine6179 6 лет назад

I love night time, but my job and dogs won't allow it. Every so often I still do it though. Like tonight. I love feeling like I'm the only one alive knowing I won't be bothered by anyone. And the night air always feels cooler and smells fresher.

@joytotheworldddd 8 лет назад

Why do we Yawn when we see others yawn too? That last part got me

@ezzzzie 8 лет назад

I actually find it comforting to go to sleep when the sun is out. I do it a lot. For a long period of time I'd go to bed when I got home from school and wake up at midnight.

@fartzinwind 8 лет назад

I've always been able to sleep wherever/whenever if I'm tired. Day, night, outside, inside, wherever. I can drink a moderate amount of caffeine prior to going to bed. I can fall to sleep within minutes of going to bed. I'm like an Olympic athlete of sleep. I hear this doesn't work as much the older you get, so far I'm in my early 30's and going strong. My only enemy is heat. I can't sleep well when I'm over heated, which is anywhere over high 70's. So I guess my weakness is summer without AC.

@ArcasDevlin 8 лет назад

I am more tired during the day time than I am when it's dark, however I do still have difficulty sleeping when it's light. So that's a pain.

@Lawliet734 8 лет назад

It's not hard to sleep daytime; I do it all the time.

@jbtibbals8490 5 лет назад

I'm an insomniac. But I use my brother for comparison. He needs complete darkness and silence to sleep. Me being a soldier sleep better with lights and noises. As hard as it is for me to sleep, when it is quiet I wake up. For me quiet means a problem. When I try to sleep I have lights on and a TV on for sound. That's how I sleep best when I can. I usually sleep to docs of war. I even try to stay up durring the day. But for some reason I am always tired when the sun is up and rejuvenated when the moon rises. I've gone many days with no sleep trying to sleep at night by not sleeping during the day.

@JeremiahCruickshank 8 лет назад

I'm watching this 2:30 in the morning :')

@Mynewestrandomz 8 лет назад

1:55 Est

@alienslovepeanuts 8 лет назад

2:55 am for me, humans can be nocturnal and many of us are...

@undertakerryu 8 лет назад

404 am lol

@fallexn2831 8 лет назад

+undertakerryu 3:43am

@khepri4172 8 лет назад

I'm watching at 4:48 am. lol

@randomprofile001 8 лет назад

i'm naturally nocturnal

@thenegativefilmcritic 8 лет назад

because the night is dark and full of terrors

@kanduyog1182 8 лет назад

i actually realised tat it's harder for me to sleep when theres some light, and sleep faster and easier when it's completely dark

@kaciekk 8 лет назад

okay, but sometimes, no, anytime, I take a nap during the day, I sleep better then than I do at night. Actually, light makes my eyes tired, which makes me sleep. I've taken naps with the lights on.

@CrazyCatMan13 8 лет назад

Damn who's doing experiments on hamsters to make them depressed??? Brutal man.

@Not-an-Alien 5 лет назад

I am. I used to wake up super early all the time when I was a kid, but when I hit puberty I became more nocturnal like all teens and just never switched back. Now I can't function waking up early. I genuinely feel better getting less sleep so long as it is at the right time then I do getting more sleep but waking up early. I tried to cover a week's worth of days at work on 1st shift for extra money instead of my usual second and I was a senseless mess by day 3. I had to go back.

@kittydearrosari 8 лет назад

I'm naturally awake all night and I sleep during the day time. But like when I wake up and it's still light out, I refuse to open blinds and curtains. I love the dark and the cold too.

@kittydearrosari 8 лет назад

The sun is to fucking bright to deal with when awake.

@ashley1234id 3 года назад

Watching this at 4 in the morning

@lilyvirginia1937 6 лет назад

i’m debunking this rn because i sleep all day and stay up all night sosososo

@Frox4ever 8 лет назад

OMG. I yawned just as he proceeded to say "Why is it that yawning makes you wanna' yawn".

@jmc7788 8 лет назад

I sleep during the day, usually going to bed at around 6AM. I have garbage bags taped over my windows, though, to block the light out. Usually, I wake up at 1-3PM.

@franky_521 8 лет назад

why din't it make me yawn

@descai10 8 лет назад

My sleep schedule just rolls around the clock, i go to sleep when i'm tired and wake up when i naturally wake up. On general, i stay up 14-20 hours and sleep 10-12, i always have the same amount of ease of sleeping no matter the lighting, and my sleep is generally pretty deep and normal.

@GhostlyMess 8 лет назад

I used to have a really bright alarm clock in my room and I would always cover it up when I was going to sleep. my mom would always say that it's not necessary to cover it up; that if I just closed my eyes, I'd be fine. recently, I got rid of the alarm clock, so minus some very dim lighting outside the window, my room is dark. I fall asleep so much easier now. long story short, I think it's interesting how light travels through the eyelid and can actually impact you that much.

@deathman1687 8 лет назад

I'm usually awake at night. I prefer night time because it's colder and I like feeling cold. I get what people say the recommended amount of sleep is. I go to sleep at around three pm and then I wake up at twelve or one am. All of this started because I didn't want to deal with things during the day. If I'm invited to something then I can easily go a day with skipping my sleep but then I can't rest at night so I basically go a day without sleep.

@seabb 8 лет назад

For some reason, I find it harder to sleep in complete darkness because I can't tell the difference whether my eyes are closed or not. And when I have to reach for the blanket or adjust my pillow, it's a little frightening not being able to see anything at all. Sometimes weird things happen when it's completely dark and I'm not tired at all. My eyes start seeing weird colors spiraling in weird patterns, like green waves washing over the blackness, or purple and blue mandalas expanding outward in a kaleidoscope. My eyelids and eyeballs hurt a little when this happens. This effect goes away immediately when I look at something with color or light though, like when I turn on my phone or the lamp. Is this just me or am I crazy?

@MysticKnight7 8 лет назад

It's not hard for me at all, I get to bed around 9-10 a.m and get up in the late afternoon (work 12 hour shifts 6 am-6 pm). Been that way for over 12 years, and actually, if I go somewhere in the morning I start to feel weird and get sleepy even more. When I see light I get sleepy, when I see it dark outside then I start to wake up/perk up (usually around 9 or 10 p.m.). The chemical that is released when you see light that helps you wake up for me is what I get when I see dark, the opposite. I dunno, my body has been trained I guess, lol. I was able to convert to a day person a few years back for a vacation, and it took about a week in total to really get on that schedule, where seeing light didn't make me sleepy.

@Minale__ 8 лет назад

What about naps? Or "siestas"? Is it a different form of "sleep", because we do it during the day, usually not in fully dark rooms? I personally feel a lot more rested when I sleep during the day, I also like waking up with the sun's warmth on my body and oh boy, nothing's getting me out of bed when the room is fully dark - I'd probably sleep for 12h non-stop.

@kennethbaker5573 8 лет назад

new format is so much better

@ma.s2386 6 лет назад

i tried many times to sleep at night at turn off the light and i actually become more alert and keep on thinking instead of sleep.....i have to turn the tv on to sleep while watching something and i could never sleep before 2 am...even as a kid i used to stay awake at bed till after midnight

@danielpronkin6657 8 лет назад

I usually go to sleep at around 4-6 am and wake up at whatever time the sun rises and becomes bright enough (or the earth tilts lol), but no matter when you wake me up I only feel tired at around 4 am, and I'm naturally an insomniac but idk it doesn't really bother me, probably because I'm still young.

@seatbelttruck 7 лет назад

I wrap the arm of my snuggie around my eyes when I need to sleep to block out light (Yes I have a snuggie. It was a graduation present and it rocks). I also used to lay my digital clock face-down when I needed to sleep, because it had intensely bright blue light. That messed up the cord, and the next clock I got was a normal red-light one. That isn't as bad.

@emplays934 8 лет назад

Personally I prefer go fall asleep while using my phone, and I'm in almost peek physical condition I'm not usually tired and my grade done suffer from it

@efrainbenitez7226 8 лет назад

Last summer I slept around 7 to 8 a.m and woke up around 5 to 6 p.m, I grew A LOT.

@Moontanman 8 лет назад

I worked shift work for 25 years, I slept in the day time, I like sleeping in the day...

@awesomesauce5974 8 лет назад

I am naturally a night person.I would not have it any other way. It is amazing how many people think being a night owl is wrong or evil. Especially a lot of elderly folk, many of them can't seem to understand that there are people out and about while they sleep.

@Gamelover254 8 лет назад

I love the night and don't really like the day time. I just feel more productive at night when no one can bother me and it's nice and dark out. Day time makes me feel weird lol. Sometimes the sun is nice and it can be pretty out, but I would take night time over that any day (:

@awesomesauce5974 8 лет назад

+Gamelover254 Nice to hear that I'm not the only one that feels that way.

@CLOVER71932 6 лет назад

I'm nocturnal and i need to be; i sleep so much better in the day, i dream better, and feel completely rested waking up at sunset. When i sleep at night i have nightmares and i wake up multiple times in the night with anxiety, i get water retention all over, and i feel like i was hit by a bus in the morning; it's just not for me. ill stick to being apart of the 80% of mammals

@acatinny 8 лет назад

To me, it is not a mystery at all. Early humans had to hunt and gather food during the day time because they did not have night vision eyes, and they had to stay in safe areas during the night time to avoid nocturnal predators. In order to save the energy to be active, finding food, during the day time, they had to sleep during the less productive time, which was the night time. Doesn't this explain it perfectly?????

@Lorvay 8 лет назад

Dont Matter what you say I will always need my night light cause this darkness kills me it feels like something is stalking me and having sleeping paralyzes as a child/young teenager didnt helped at all. But I reduced my light to a smaller light I try but I dont feel ready to sleep without a light. The only time I feel better to sleep without lights is when somebody sleeps with me in the room. :3

@SolomonCornish 8 лет назад

Before even watching this video, I assume the reason we aren't nocturnal is because we can't see anything when it's dark, making it nearly impossible to get work done.

@asiyaheibhlin 8 лет назад

Funny how I am a natural night person and my body heat is hot as the devil at night, as if I am running a fever; during he day my body is cold and I don't like to touch hands with people because they feel out about how cold they are. I love the night shifts more than day shifts

@3Runner95 8 лет назад

Hear me out on this one... I do think that night owls exist and I'm most likely one of them. First of all, yes i do prefer dark rather than light to sleep, but that is most likely because light makes me feel exposed and dark feels safe and cozy.. Kinda like sleeping out in the open or inside a cave or whatever shelter. The whole "leptin makes us less hungry" part also doesn't seem to be the case for me, I eat the most at night. I realized that i like being up at night way back when i was a kid(21 now) pretty much as soon as my parents stopped forcing me to bed early :D Every vacation/holiday id flip my sleep schedule and stay awake all night.. Even today it's easy for me to stay up all night but its sooo hard to "fix" it. On average i sleep for 9-10 hours. This one might be weird but i like going out at night, for walks or whatever.. When going up the stairs or waiting for the elevator i don't turn on the lights..Might be a vampire though

@Itchy2k 8 лет назад

i hate it when there's a minimal light source even if it's a tiny gap of light. The room needs to be completely dark. Or even better darker than dark... advance darkness.

@101Asa 8 лет назад

That moment when you know your even more messed up than you thought. Light makes me tire and darkness fuels my energy, or it feels that way. Yep, I'm not just a night owl. There is physically something wrong with me. Yay?

@will3346 8 лет назад

So are candles and fireplaces just not bright enough to reduce melatonin

@CharredChar 8 лет назад

I would think they are but it is also more likely that most people didn't keep such things burning at night because either they wanted to save resources while not really needed or because they did not want the chance of their houses burning down while they slept.

@will3346 8 лет назад

CharredChar he did say they got up and did stuff so i assume they at least lit a candle

@CharredChar 8 лет назад

Will L While awake, of course, but to keep it burning at night ... I learned as a kid to not keep candles going at night during a power outage to prevent fires and less items in the house are flammable in modern times.

@JonasHamill 8 лет назад

It wasn't discussed here, but it's often said it's blue and green lights that keep you awake. Which is why 'night mode' on newer smartphones makes the screen more yellow. Yellow like the colour of fire? Speculation but it seems to make sense.

@kiranevetts7868 8 лет назад

its not the right wave length. blue light from the sun (and electronic devices) wakes people up

@devon582 8 лет назад

I'm watching this at 1:00am my pc monitor is bright as hell and keeps me awake more than i should be he's got a good point about that.

@ljuc 8 лет назад

I have more comfort when I sleep at day with light.

@codeman7055 5 лет назад

I've been trying to change my sleep lifestyle from night to day, I try and stay awake with coffee and during the day I am able to sleep for roughly half the day.

@MegamikazeMoriko 6 лет назад

i highly disagree i'm human and i'm NATURALLY nocturnal. i'm dead fuckin serious there's several reasons why -i'm scared to death of the dark, so i sleep in the daytime where the light makes me feel safe -warm sunlight makes me sleepy -darkness/artificial light makes me awake. only natural sunlight can make me sleep -i try hard as shit to sleep in the night but i can't. i try turning off all my electronics. i try turning off my phone. i try closing the curtain (the streetlights keep me up). i even tell my neighbours to turn off their loud ass music. but even all that turn down, i still can't sleep even in natural darkness and silence so yeah. my body learned to be awake at night and sleep when the sun is up. even when i'm camping and have no electronics on me, i still sleep when the sun is up. i'm dead serious. i'm human and i'm a 100% NATURAL NOCTURNAL. others are nocturnal because they are on their phones or working too much. i'm nocturnal because i cannot sleep when there's no natural sunlight

@depressedtrashpanda4827 8 лет назад

i work nights and its hard for me to sleep with light. 1/8 inch this black vinyl on my windows sealed with dap liquid concrete... its like i dont have windows anymore i love it.

@boysrepublicmx445 8 лет назад

Ehhh... I naturally sleep during sunset and sunrise during Summer, and during Winter, I sleep fully nocturnal... naturally... Even when I tried to changed to a full diurnal, I still start falling asleep when the sunrises. Sometimes when I can't sleep, I turn on the light and then I can fall asleep. While something might be applied to the majority, it does not apply to everyone.

@Dementor7665 Год назад

Usually I stay up during the night on weekends or holidays and on weekdays I sleep only at night *depends on the environment*

@hopelessent.1700 8 лет назад

In the day I get dreams of traveling in space until some loud noise occurs and I wake up and have a terrible ringing in my ear it's odd...

@Thezuule1 8 лет назад

At one point our ancestors certainly were nocturnal. That's part of the reason human beings can choose our sleep cycles unlike many other animals.

@mahuob 8 лет назад

all of that was mentioned 1437 years ago in the holy quran in sora An-Naba vers "(10) And made the night as a covering, (11) And made the day as a means of subsistence)"

@GraverFILMS 8 лет назад

I work night shift and I don't have any problems sleeping in the day or staying up at night but I feel like it's wrecking my health

@Renallis 8 лет назад

I can sleep anywhere anytime. Light doesn't seem to bother me in the least. The 2 sleeps thing i kinda do but its random. :)

@leafygreenmarie 8 лет назад

Im an artist and dancer and last night I was literally doing an intense workout at one am and I'm normally most creative at night time. I like to work at night and sleep during the day lul

@samursu6824 8 лет назад

The reason we're awake during the night is already answered in this video - 80% of prey animals are ASLEEP, making them easier to catch. Furthermore, humans also sweat precisely because it gives us an advantage to catch swift animals that overheat and tire in the hot daytimes of E. Africa where we're all from :)

@Tabookoomi 8 лет назад

I prefer to be up at night and sleep during the day. but I prefer it dark where I sleep. I think it has more to do with less people bother you at night. and if you go out to a concert or whatever by the time that you drive home you are never tired because you are always awake at that time. in addition I have less wrinkles due to not having to squint in the sunlight as much.

@johon808 7 лет назад

As a midnighter, I am the night

@TheGoodContent37 8 лет назад

YES!!! I asked this on this channel months ago and finally you did a video about it! I have had this doubt since I was a kid xD

@purrbox7514 6 лет назад

You should always get up when it starts to get light, sunlight gives us energy and helps regulate our body. Millions of years of evolution has made us naturally diurnal, no amount of "scientific theories" will ever change that. Sleeping during the day will cause significant complications over time. Most sleep disorders are actually caused by artificial lighting. All artificial lighting should be significantly dimmed at night and absolutely no blue light at all.

@Wastingsometimehere 8 лет назад

Ummmmmm..... I slowly adapted to the point where I can sleep with the lights on and even in sunlight. sometimes, the heat and sunlight can make me sleepy.

@dutchik5107 8 лет назад

heat is energy draining for everyone. and so are large amounts of bright sunlight, "fresh" air. you know the type in nature. and the salty scent of the sea or ocean.

@BlueBD 8 лет назад

+Dutchik Opposite for me While draining, Heat makes it next to impossible to sleep normally. It I only fall asleep in heat when i become sleep depraved.

@dutchik5107 8 лет назад

+Blue★ yeah I can't sleep with heat either. but a long hot day does make you tired.

@weloudtongs 8 лет назад

I've always preferred sleeping during the day, and find it easier to drift off to sleep whenever I'm in a well lit room :p

@matthewraudebaugh9850 8 лет назад

Watching this at 8 in the morning after no sleep

@javierfernandez2958 8 лет назад

holy crap. that commercial was brought to us in part by Beyond Belief. Beyond Belief, a tv show on the discovery channel back in the hey day. they moved the whole cemetery.

@dutchik5107 8 лет назад

I just hide in my cave during "night" so I'm not in there from 2 pm? to like 4 am? you have no idea how beautiful stars are, and how peacefull it is at night. ahh the silence...

@grassy6101 8 лет назад

I'm a total night owl and when I don't have school like during the summer I usually go to sleep after the sun comes up especially because I'm horrified of the dark.

@Xelaon 8 лет назад

Good and interesting news!

@ozdergekko 8 лет назад

I literally can sleep well under any conditions. My natural rhythm, which has quickly reclaimed me after retiring, seems to be ~2 am to 10 am.

@BlueBD 8 лет назад

While late its still 8 hours. You good brah...as long as you aint got nothin to do at those times.

@ozdergekko 8 лет назад

Blue★ -- Thanks for the confirmation ;-) Sometimes I sleep 9 hours or only 6 -- get up whenever I'm really awake. In fact I try to have all appointments between 11 and 16.

@BlueBD 8 лет назад

+ozdergecko same. I actively avoid anything before 12... aside from Outside breakfest.

@descai10 8 лет назад

Personally I have no solid preferred schedule, i sleep when i'm tired and wake up when i naturally wake up. On general i stay up 14-20 hours and sleep 10-12. I fall asleep just as easily no matter the lighting, and my sleep is generally still deep and normal. My schedule probably leans into being nocturnal a bit more than diurnal, as my schedule rolls slower when i'm awake at night more.

@Ckdude100 8 лет назад

Yeaaaa no... I sleep during the day 100%. The only time I see light is sunrise, when I go to sleep. This is during the summer. Also I love background noise, I always have my tv on when I go to sleep