9 Groundbreaking Discoveries About Sleep

time to sleep to remember all this

At 7:04 that mofo is holding his phone upside down.

Oh no Hank, you didnt! Why did you have to remind me of those cat videos?

Didn't teach me how to eek out a better study vs sleep ratio. I am disappointed.
Actually pretty interesting, but the above is a priority of mine at the moment. Though the blue light tip should help.

All I hear is tested on animals... Over and over.

I put this on 75% speed & Hank sounded drunk wanting to fall asleep!

Does anyone out there sleep really well all the time? I am one who sleeps great almost all the time; I have full, elaborate dreams in full color, full sound, with orchestra like music, even. I have always slept well. I feel deeply rested when I awake. I feel like one does after a great movie , or a travel to a distant country, like I have had a relaxing adventure. and on top of all this I have to sleep during the day because I work all night long.
I hear so much about insomnia in the news, but I can’t relate. Am I alone out there? Do other people sleep very well all the time??? Maybe Some one should study my sleep so that I can help others??

Who else works nightshift.?

What I'd rather like to find out is why blue light, or even daylight does not affect my sleeping at all, and if not woken up by an alarm my sleep cycle seems to last about 11 to 12 hours......I feel like a mutant with the lamest superpower......

What about Tesla?

So, when your parents wake you up at 6 or 7 am to go to school they are actively counteracting your ability to learn.

i have wicked insomnia and have stayed awake for six days. it was awful 😞

I've been having insomnia and been getting 2-3 hours average of sleep a night. It sucks rocks!

If you want to know the answer why we sleep, go get Matt Walker's book "Why we sleep".

Yes our ancestors probably got less restful sleep and shorter hours, but most likely would have spent more time resting during the day and probably didn't often pull all nighters as commonly as modern humans, so this may have equaled out in the long run

Yes our ancestors probably got less restful sleep and shorter hours, but most likely would have spent more time resting during the day and probably didn't often pull all nighters as commonly as modern humans, so this may have equaled out in the long run

Hank,
What do you do for a living besides SciShow? I don't believe that you spend every day researching to make more videos.

His rapid arm movement "RAM" is putting me to sleep

You didn't mention pre-industrialization sleep patterns. 4 hours sleep, wake up and putter or have sex, then another 4 hours.
Obvious omission.

Great video to watch at 04:45 am.

Watching this at 3:34

Giacamo needed Zolfidem for sleep a good sleep drug for emergencies

I had to replay the entirety of #4 because the first time through my brain wouldn't stop yelling "CONSTANTIN VON ECONOMO" at me

I've seen videos about the family with Fatal Famalial Insomnia. It's so horrible they wish for death.

it's been a year, do we know yet?

All those poor rats! 😰

😧

What about if you sleep too much? What about sleep disorders like narcolepsy?

Maybe Now we can take care of nyc rat problem ? If we could only rid the Rats in the white house !

What about the shift from biphasic to monophasic sleep?

I haven't had a dream since I was like 5 well I guess that's not true sometimes I dream but usually my dreams are just a black mass

"We still don't know why we sleep" proceeds to give pretty darn critical roles sleep has for the body. We already know why, it's important!

Poor rats

I love your channel... but this episode seems mostly about speculation and loose connections than actual science.

I click on video,
Get a mattress ad.

6:00 creepy much

I am watching this while I can't sleep! My body is trying kill itself!

"scientists dont know why we sleep" We sleeo because were tired, Wheres my Pulitzer?

It's 3.30 am. Welp

World sleep day 😴

It would be more exact to say that the Hypthalamus is the part of our brain responsible for sleeping, not the Thalamus

my god all these horrible rat experiments .....

Truly, the best part of the day is drifting away.

Geez scientists. Lay off the rats!

Whats the difference between sleeping at night and day ? In terms of brain activity

I ❤ sleep
Would love to see a video done about how different substance/ drugs effect your sleep and dreams.

Too much sleep is also very bad. After resting too long for several days, I get headaches and feel like a rock.

Couldn't finish this video once the rats who had been burned were deprived of sleep. We'd already heard about rats being tortured to death with sleep deprivation, and rats being tortured to determine their pain response during sleep deprivation. My turning stomach says the ends do not justify the means. We aren't just killing these animals. We are torturing them to death.

it said 9 but i only saw 8

watching this at 4am

I would prefer to not know what the lack of sleep causes than have innocent animals be tormented and get killed.
I didn't plan to stop sleeping anyway

Yea tom we're still waiting to see if theres any real coralation between phones and sleep deprivation.

Is it funny that I fell asleep watching this video? Haha I think my anemia has come back 😂 greetings from Chile ❤

we sleep to be alive

you know what i learned the most from this video, the amount of crap that scientist put rats through

About the "being more receptive to pain after not sleeping" bit:
As a result of my Asperger's I have sensitive hearing, so loud noises are not only obnoxious but can be painful. I also have random bouts of insomnia. After not sleeping, my sensitivity to noise is amped up to absurd levels -- for example, just putting silverware away or shutting a drawer a little too hard is physically painful, whereas if I got sleep it isn't. Even my parents talking at normal volume seems louder and more painful.
I told a doctor about this and he basically went "Dafuq??" In all his years he had never heard of this weird thing that happens to me.

OMG. Poor rats what have they been doing to them. My God!

Not sleeping caused rats to have weight loss and faster metabolism. Seems like a good thing.

i guess its ironic that i stayed up all night watching these vids...

The studies I found and things I've warched, they have figured out why we need to sleep. There is pretty much a laundry list of thing that happen during sleep. Without sleeping they don't get done or don't get done as well that pretty much leads to failure of functions and sickness/death

Don't feel to bad for rats they did spread the black and bubonic plague and killed over 70 million people

Poor rats...

wow the ass holes took away the rats sleep, shocked and burned them...

What about polyphastic sleeping?

Do we have to know? Everyone is going to die even if you are immortal.

YOUR BRAIN POOPS? AND FLUSHES?!

I'm watching this too late its going to affect my sleep.
Also the editor is cramming to much info, hence the quick in between scences being crammed together leading to insufficient time between ideas. Fix: Write a script that explains the concept more subsequently, so the host does not come off talking too fast.

Please please please sit on your hands, very distracting from the subject.

It took 2/3 weeks torturing to death some rats by not letting them sleep. Harsh.
Edit - sorry whats that about burn wounds? Do some people become scientists purely to be psyco's to animals?

Excellent

Is not sleeping will kill you not an answer to why we sleep? i need An Answer PLS!

At 8:05, Hank, I think you said “watch SciShow with your cat in the middle of the night” wrong...

The newer Samsung phones have a selectable blue light filter. Works well.

Poor mice, I feel so bad for the torture they have to go threw.

This episode just makes me feel bad for rats.

"Blue light will disrupt your sleep"
-Background is blue

I have a herniated disc at my L5 S1 and dextroscoliosis also of the lumbar and a history of insomnia. I literally can not sleep without meds

Your hands keep on moving unnecessarily. It is annoying.

You better change your somewhat blue background.

Arabic Subtitles? This channel is now
looking like ISIShow

1:43 - "Studies done on rats in the 1980s confirmed that sleep deprivation on it's own is fatal."
Professor: "So what field do you want to do research in? Climate change? Medicine?"
Scientist: "I want to see if we can kill rats through sleep deprivation".
Professor: "Dude... is everything ok at home?"

Dont do meth

machines need down time for maintainability. If you don't maintain the equipment, it breaks down prematurely. That's what happens when you sleep, primarily in your dome piece.

I lotteraly fall asleep while watching this video! Seriusly my ipad fall to thhe grownd so i woke up

What I hear you say is that naps are a good thing..? 😂

Most people who go to sleep clinics have trouble sleeping. I wonder if they could learn anything from someone like me? I fall into mini coma's and dream vividly every night. I'm also difficult to wake up.

i use the program f.lux to auto regulate the lights of my computers. after a couple of months the change it is noticeable, i could sleep more and also i do not keep watching videos at midnight every night. still i am starting to worry about those light on the computer fans.

I know I'm not the only one watching this while sleep deprived

What about the "2nd sleep", which was common in the Chaucer era? And/or are there any myths behind that?

You don't know why we sleep but proceed to explain what happened when we don't sleep? Please do not respond to this automated response muh fukka.

Pretty sad how I haven’t slept and it’s already 6 Am.... I’m taking advantage of my winter vacation...

Who else is watching this video at midnight, with blue light, and trying to pull an all nighter?

fatal familial insomnia? cant doctors like. just give them heavy sedatives. induce a coma. anesthesia. etc. basically forcing their bodies to shut down.

1:18 Bro, life is ultimately fatal

Right now, millions of mice, rats, rabbits, primates, cats, dogs, and other animals are locked inside barren cages in laboratories across the country. They languish in pain, ache with loneliness, and long to be free. Instead, all they can do is sit and wait in fear of the next terrifying and painful procedure that will be performed on them.

All the talk of animals being tortured to death really put me off.

Wrong. Brains need to sleep in order to urinate. www.ted.com/talks/jeff_iliff_one_more_reason_to_get_a_good_night_s_sleep/up-next

Maybe aging is caused by sleep deprivation.

I was about to show this to my mom until 7:07

When I was a kid I was afraid to take naps. I thought that was how you got kidnapped.