To Sleep, Perchance to Dream: Crash Course Psychology #9

[@Katie__17]

Hank: "sleep is important" Me, at nearly 2am, working on a presentation: "sleep is for the weak"

[@adelezhang9513]

Me, as an Chinese AP student staying up late and dealing with the jet lag: “sleep is for the weak cuz CB forces me to take the freaking psychology exam at 2am.” Lol

[@Katie__17]

@@adelezhang9513 Oh man, that's crazy...good luck on your AP exam though!

[@adelezhang9513]

haha thx!

[@adamD9360]

So true.

[@atcslay5140]

I learn way more from this guy in 10 mims than I do from all my teachers In week

[@eonorez3]

ATC Slay The guy summarized an entire chapter in psychology textbook in 10 minutes. Impressive stuff.

[@imneverawake8105]

+eonorez3 you gotta rewatch or take notes so it can all seep in though.

[@babycriis2287]

Neew Reseeeeaarcccch: “Outsmaart Insomniaaaa” Cure => twitter.com/1841b0b077b2c9b36/status/822777083591999489

[@thenormanator5289]

ATC Slay Yet you still can't spell "minute" right.

[@rachelmccray6043]

ATC Slay Amen!

[@miguelrothe6943]

After being raised by a psychiatrist my whole life I have started breaking the fourth wall in my own dreams when they get ridiculously psychologically heavy-handed (which is often). One time I dreamed I was a kid in the back seat of a car and the driver disappeared and I just went, "Screw this, I am too old for latent abandonment issues", and woke myself up by crashing.

[@Shyles25]

4:12 "REM sleep is sort of paradoxical. Your motor cortex is jumping all over the place but your brain stem is blocking those messages leaving your muscles so relaxed that you're basically paralyzed except for your eyes." You just explained Sleep Paralysis. It's freaky.

[@Dunnygirl21]

how do you make that stop!? i experience this more often than i would like. like in a year it will have at least twice if i am lucky.

[@Shyles25]

Dunnygirl21 idk how to stop it. But I've only had it once or twice while sleeping on my back. When I sleep on my side it never happened.

[@Shyles25]

Nadia Zaleta That's unfortunate. I guess there's no way to stop it. And I'm surprised you kept going back to sleep. Lol

[@Jess-nz7be]

Dunnygirl21 i drink camomile tea everynight before bed works for me also i use this lavender like spray i dunno if it's placebo effect but it hasn't bothered me in 3 months

[@ushnar9346]

@@Dunnygirl21 if you sleep on your right side first as soon as u lie on ur bed with ur hands underneath ur hand prevents sleep paralysis for me ! Infact was a Sunnah (habit) of the prophet Muhammad (pbuh) . I do it and it works!!

[@eileenbraswell3791]

Video: *starts talking about dreams* Me: “Close your eyes, shut your mouth, dream a dream and get us out. Dream dream dream dream dream dream”

[@luciencopeland2545]

THIS SONG. I READ IT IN BABY LAUTNER'S VOICE

[@Xenolilly]

I struggled with Math for a long time, but my teacher who actually helped me told me to sleep after learning a difficult concept.. This was the first class I was able to excel. Study plus sleep really worked for me. Perhaps it was just a placebo. Who knows.

[@nicolewong9638]

No, that would make sense! It's been researched because everyone is interested in maximising their studies before exams. Sleeping helps consolidate knowledge you have fed your brain. That's part of why it's so highly recommended to get a good night's sleep after studying and before an exam.

[@crashcourse]

Why do we sleep? Well... that's a tricky question. More easily answered is the question,"How do we sleep?" In this episode of Crash Course Psychology, ***** discusses some of the ways our brain functions when sleeping and how it can malfunction as well. To Sleep, Perchance to Dream - Crash Course Psychology #9

[@nathancook8048]

Because we get sleepy...

[@hey_its_a_me_pario]

nathan cook, it's never that easy

[@nathancook8048]

Pari Vermani those arent my words....those are the words of leading scientists in the field...I don't remember exactly who said it....

[@hey_its_a_me_pario]

nathan cook I thought scientists were supposed to be more precise... I wonder where they went wrong...

[@TheScaryfluff]

Can you please do something on sleep paralysis. I had it so went to research it and there are so many good, bad, weird and crazy explanations out there. I'd love to see a video on that.. I think a lot of people would too. Thanks

[@Justin_GFM]

Does anybody else have dreams about stuff that ACTUALLY happens later on during the day? Like for example, you dream about a fight happing during 5th period lunch. Then when 5th period rolls along, french fies and barbecue sauce and burgers and honey mustard and blood start flying everywhere, and you think,"Wait, I had a dream about this!"

[@aaronjackson6880]

Justin yes not as often as used to, but at one point it was almost every day, and would always end when I tried to listen to cobersations Edit:this comment is late

[@joiestorme]

I do but I have a sixth sense that semi-predicts things in general, though.

[@mykealahassinger8556]

I think its called dejavu

[@handsome_hunter1364]

Hell yes... I don't know what's that but i often get those dreams or thoughts that yeah I have faced the same in my dreams or in real I don't know... Wht if j can see my future .. lol 😁

[@yvyrose195]

Yes I did.

[@abiguzman4117]

This guy is doing great. i feel like i can learn more accurate viewpoints of how this whole science thing works. I hope he has calculus videos or starts doing math too

[@haleygold9481]

+Abi Guzman He has a channel called "Sci Show" that you may like :D

[@haleygold9481]

+Abi Guzman He has a channel called "Sci Show" that you may like :D

[@abunnou]

+Haley McPadden does it have the little animations

[@haleygold9481]

Not really

[@dzgn4831]

And I wish he had a medical channel .Because he is such a good narrator

[@PaniniWasteland]

I remember I caught my sister sleep talking when I was getting ready for work and she screamed "I'M NOT GOING TO DO IT!" It startled me pretty bad but it was pretty funny.

[@wetowl479]

I said "dad can I have a cookie?"

[@miria4157]

I dreamt of falling asleep once.

[@anonanon4260]

Aria MISSY :l same

[@miria4157]

Cole Tyndall haha glad I'm not the only one

[@anonanon4260]

:I

[@miria4157]

***** at one time yes

[@superhyperyoshi]

One time I had a dream within a dream within a dream within a dream and every time I "woke up" in these dreams they became more and more realistic until I actually woke up.

[@TheTwinkieFairy]

I've heard that sleeping (and dreaming) is also a time when we "clean out" our neural pathways. Like, getting rid of unneeded junk we acquired throughout the day and making our memories of important things that happened (that we want to remember) and putting them in our dreams. That's why a lot of times our dreams are based on our day. People with weirder dreams either have nothing of real value from the day to commit to memory, or just spent too much time playing that certain game or just did nothing and let their mind wander throughout the day. I once had a dream and when I woke up I had one thought: "You don't have the third breast of creativity!!" I still have no idea what that means... -.-"

[@AlycatIsAlive]

I've been watching these videos because I just started my psychology course (today was day three), and I really want to learn more about some of the topics that we've discussed so far. Definitely not disappointed. CrashCourse never fails to impress me and teach me tons of cool information. 😊❤

[@ws6778]

They only forgot to mention the hypothesis in which our dreams are just simulations of problems from which we can learn to survive better.

[@LeBadman]

Hank, all teachers should be like you! A big thank you for the team behind Crash Course as well!

[@MadelineLewis1234]

Has anybody else died in their dreams? One night I dreamt that I was on a dark porch staring at a candle. Woke up several times but went back to that same scene every time. Then at around 6 in the morning, a man came out of the dark, picked up the candle, and burned me to death. The rest of the night all I saw in my dreams was black. Never happened again, but it did scare the heck out of me.

[@celinematthews4394]

Wow. That's scary

[@katyaballands8260]

Damn

[@Toxiccranberry98]

yes I have died in my dream but it wasn't as extreme as in yours!

[@AlexandarKrastanov]

I never died in my dreams. Everytime I somehow manage to escape death. Even by (can you believe it) forced awakening from my dream (I just say to myself: this is not real, you must wake up!).

[@michaelinsero402]

When I was younger, I died in my dreams, but I was kind of watching myself being cut up and torn apart by eagles in a 3rd person view.

[@ranpo_edogawa]

I actually had a dream where if I typed 65 into a calculator I would travel through time. The first thing I did was travel to a Wal-Mart to get Halloween themed brownies. Anyone else wanna share their dreams?

[@danielbush5438]

Emιl Sтeιlѕѕon Had a dream that I was a Jedi once. Was pretty cool.

[@drakost8848]

I had a dream that I was in a field with an old woman next to a dry riverbed. The woman erupted into thousands of rats that swept into the river and ate everything in a nearby village. Some of my other dreams are far worse than that. For some reason my dreams are interconnected, one happens after another chronologically. I keep a journal so I can one day adapt my night terrors into a game or book.

[@Megan81159]

Emιl Sтeιlѕѕon one time I dreamed I could travel ten seconds back in time by touching live playdoh worms. Another time the government was trying to ban all plushies so all the stuffed animals and I led a revolution.

[@ranpo_edogawa]

The Polymer Buffet​ That sounds amazing omg

[@lanza3861]

had 3 consecutive dreams in which someone locked me in a dark room and looked at me through the door window. Each time, I had to (just an intuitive feeling) turn around and walk towards a small mirror on the opposite wall, then will myself to wake up (I was aware I was dreaming each time, but waking up was a battle against my own mind), only to fall asleep and have the same, but more ominous, dream again.

[@Torguish]

Running naked, teeth falling out chased by a Matt Damon centaur.... This should be a movie. Definitely should be a movie. Someone make this a movie.

[@Torguish]

That bananafingerraccoonbaby would be a nice ending to the movie. He's just misunderstood. D:

[@SidPhoenix2211]

One, time in my dreams, I was Iron Man, and it was totally awesome. Then one time, I was Batman and I saved my school. Then one time when I was really small, this tv actor came to me dressed in a Spiderman suit, and stole all my toys. Weird

[@Torguish]

Siddhant Pandey i once saw a dream where the hulk had a cameltoe. Thats fucking weird.

[@ssj9997]

Torguish I don't think it would make a good movie, sorry

[@Torguish]

ssj9997 YOU PARTY POOPER YOU!

[@AngelStars101]

This sounds really weird but sometimes I have dreams and they end up happening exactly how I saw it in the dream in real life.. not huge events or anything, just like short clips of me walking down the stairs or getting out of a car and stuff like that. It used to happen a lot when I was a child, but now it only happens a few times in a year. Someone else I know says that the same thing happens to him sometimes as well, and yeah, it's pretty weird.

[@AngelStars101]

Sometimes I forget about the dream until it actually happens in real life, and I get a deja vu feeling

[@kennethlancaster5147]

AngelStars101 Same here. Very strange. I once heard that this is our parallel lives intercepting at a common point. Neat idea....

[@emeraldchild97]

Same thing, it might be that since are brains are immensely active when asleep the brain is able to predict logically what will happen in the future.. but then probably not. when I was six I dreamt of an image that I then saw nine years later at the Holocaust museum (also it was this really obscure thing that there was no way I would have ever seen it before).. so yeah... preeettty weird.

[@Sk8Joker1]

Yeah I dream about my everyday life too. When I woke up, it was my everyday life as well! So insane.

[@carlaismm]

Ru The deja vu feeling has a logical explanation. It's actually just your brain noticing something before you realize you've noticed it, so when the information really reaches your consciousness, you also remember what your brain noticed before you did, so it's like you've seen it before. But if you really dream something and remember it well and then it actually happens, that it pretty weird and cool.

[@sounak_mitra1403]

I'm seeing these videos for some time..and I can't seem to believe how much Hank can continuously talk. His flow of speech is superfluous.

[@bethansloman1773]

can you do a video on sleep paralysis please?

[@princessvlog2699]

Bethan Sloman yes please!

[@Pebbles18]

Gods, please!!! There's so little stuff about it

[@arminarlert1953]

Bethan Sloman its an example of Hypnopompic Hallucination which some of us experience right after waking up. :)

[@nathanhaimson]

Both my mom and I have a sleep disorder called Delayed Sleep Phase Disorder. Basically our circadian rhythms are off, meaning our brains release melatonin at the wrong time. For some people, it's only off a little (a few hours), but I have it really bad, so my body naturally wants to go to sleep at 4-6AM and wake up around 3-5PM. It's really hard to deal with because I work during the day, and even if I manage to force myself to sleep at night (which is difficult), my brain is releasing melatonin in the middle of the day so I'm slow and sleepy. It would be like someone with a normal sleep schedule having to work a full shift in the middle of the night. It's super shitty I hate it.

[@pathologicallydead7210]

binge watching this for my philosophy class tomorrow, thank you for the awesome videos so far!!! 31 episodes to go

[@ethangab9776]

Dont let your dreams be dreams!

[@DonnaIRL]

+Gab B yeah but in my dreams my shoes usually go missing

[@amfadedbiiish1867]

Psych IRL... Sam Winchester? is that u?

[@maryakrivopoulou3584]

am FADED BIIISH would you look at that,the SPN fandom has made it to an educational channel.Our next goal: Dr. Phill

[@ItsKardamin]

I think some dreams need to stay dreams.

[@hackerbot809]

As a wise man once said

[@jessicawardlaw1821]

What I've noticed about the relationship between night terrors and insomnia with adults, is that a lack of sleep or not getting enough might cause more stress, causing the episodes in the first place. Glad Hank mentioned night terrors! There isn't much I could find on it.

[@ADyingFaith]

Anyone experienced sleep paralysis. That is terrifying.

[@vanissaberg5824]

I have! And what's crazy about it I didn't even know what sleep paralysis even was until recently. My parents are super religious and told me it was Satan's demons and evil spirits attacking me while I slept which naturally, adding their beliefs to the mix, made the experience even more terrifying!

[@nishatanaira857]

ME! just recently... It suxx

[@jasminem8465]

Lynda Murray i often get sleep paralysis I kinda got used to it lol does that even make sense

[@70X1CW4S7E]

I haven't but what I've herd about it I don't want to xD

[@danandam7100]

Yes

[@PikachuDenki]

Is it bad that I got tired during this video? And almost fell asleep twice? It's not because the video is boring (it's not, I love Hank and psychology), but I'm just really tired suddenly ... The only reason I'm commenting is because Hank said, "If you stayed awake during this episode, you learned ... " at the end, and it was quite amusing. It felt like some sort of jab at me for almost falling asleep. Lol, oops.

[@thebearbea]

I ended up sleeping 3 times so...

[@Edgelordess]

The only reason I'm tired is becuase I decided to have a midnight snack while watching this.

[@georgiacrisp]

same!! and does Hank have a crush on matt damon?

[@chadking8973]

LuckyCandi felt the same

[@Cloud-fs5qx]

Ya I started feeling tired too. Must be the talk of sleep that makes us tired. CrashCourse has suddenly become Pavlov's dog experiment...

[@sjbrooksy45]

Glad I'm not the only one who's had the Matt Damon centaur dream.

[@DatSQ5]

I love that people like you do videos like these. I refuse to see a therapist even though my PCP has told me I have GAD and possibly bipolar and multiple personality. These help me and I'm more comfortable listening.

[@AngelusLabyrinth]

I once dreamed of a beautiful, soft, large bed. In my dream, I was so happy to be in that bed that I rolled on it. Then in real life, I rolled off my sofa and into the floor. Because I don't have a bed and sleep every night on the sofa. Wonderful.

[@oafkad]

"Here's hoping you won't need any stitches when we are through." *suggestive glance* >blushes< Oh Hank.

[@salmonsalmon22]

I once dreamed of Link and Zelda having a Pokemon battle

[@FlameWorthGaming]

RuthAnn107 that means that you often fantasize about old men fighting with sticks while being cheered on by chickens without eyes.

[@Tale_Teach]

I love you, don't marry me.

[@peter-peterpumpkineater4982]

who won

[@RenardeBlanche]

The beginning of the title had me expecting a Crash Course Literature 2 video. I was like "Hank? What are you doing here?" lol

[@floataway3]

Same. I stared at it for a second in my sub list thinking it was a lit vid, but then I was like "wait, we already passed Hamlet..." and then I read the rest of title and realized it was Psych.

[@jennifervalentine390]

I swear I come here all the time! But it's so useful, I learn a lot more than I have in 16yrs of schooling and shoving useless information for a test that'll never kick me where I need to go!! (I appreciate y'all so much thank you!!)

[@mikacastillo6396]

I love the moment where youre not quite asleep but not quite awake, youre just deeply relaxed, and starting to fall completely asleep

[@sptells]

Have there ever been studies done as to why pregnant women have such vivid dreams? I know I'm not the only one who has experienced this (there are websites devoted to it), but as someone who rarely remembers dreams, I'm practically haunted by one I had when I was pregnant with my daughter. Content of the dream aside (it was pretty terrible), the concept fascinates me.

[@George4943]

I suspect that not only pregnant women have vivid dreams but others facing a life-altering situation. We all have an automatic fear of the unknown. Because it is unknown our dreams are unconstrained. The projected consequences (sometimes pretty terrible) are tested for emotional content. How would it feel if the worst consequence happened. That feeling may wake you up leaving its trace in memory which, after all, is cemented by emotion. You did not know Li who died two days ago. I know. It is in memory. Cemented by emotion. Living memories of Li A good life well lived Beloved by all she met Loving Memories

[@sptells]

George Steele My deepest condolences to you. I may not have known Li, but she sounds lovely. And beloved.

[@jessarose2288]

I think all of the hormones also contribute to a lot more brain activity.

[@joiestorme]

It’s probably related to the anxiety of becoming a parent, whether you’re aware you’re nervous about it or not. I mean, bringing a child into the world is something so terrifying and major, it would make sense that your brain is super active and the dreams are so vivid. For some it continues after the birth of the child as well.

[@Em_Elizabeth]

My mom once had a dream that we were all walking through a park and my sister stayed off to wade in a pond and drowned. She woke up in tears and put my sister and I through swim lessons.

[@scalehex]

I have a question for next episode: You said you were going to talk about hypnotizing someone, Can you hypnotize someone's pain away? like really block it? if so, is there any dangers to that? like blocking the ability to feel if something is wrong in places like your head?

[@EyeLean5280]

We tried hypnosis as our pain management strategy for labor and childbirth. It did NOT work, lol!

[@dakraziest0332]

Hypnosis is under heavy debate, the main facts that have been established uptil now are that you cant make a person do what they dont want to which means if you really want to feel the pain u will but then again there are cases that suggest that you can actually achieve new highs in life its a part of psychology that havent had the spot light uptil now, a lot of people have tried a lot of stuff but none of them achieved similar results so no one really knows what or how or if it could actually work.

[@rachelscott588]

I'd assume that this would only be possible if the pain is a kind of imaginary pain (meaning that you once experienced this pain, it was fixed, but your mind continues to register the pain every so often as still there). Yes, it is known that hypnosis only works on those whom are open to the suggestions of the hypnotist, but my guess that any real pain wouldn't be stopped by hypnotism, though, I may be mistaken.

[@dakraziest0332]

Kaori Imai Pain is nothing more then a feeling, so in theory it works but practically there isnt enough to support it

[@thaloblue]

I used to vividly dream mostly in the spring, and those were usually either really weird distortions of what I did in the day or nightmares. I dreamt once that a giant grasshopper bit off my hand, and when I woke up my hand was tingling for two hours after

[@thaloblue]

***** That makes a LOT of sense haha thanks! :D

[@sasharemington6025]

Or it might have been a kind of placebo effect.

[@Prizzlesticks]

This comment paired with your username cracks me up. Yes, that DEFINITELY sounds like a dream about love. That grasshopper LOVED your hand.

[@scouterlion5363]

I have to do a school project on sleep and dreams and THIS HAS ABSOLUTELY EVERYTHING THANK YOU SO MUCH

[@andrewselvig7848]

Sometimes when I wake up and and when I close my eyes again I instantly dream.

[@MrUnpredicatable21]

Same here I can go back into the dream I was dreaming if I do it fast enough

[@calebstewart2556]

Me too lol but I rarely get dreams so when I do they're very good

[@Chief-rx5zr]

Andrew Selvig you wouldn’t know if you “instantly dreamed” because there is no awareness when sleeping outside of dreaming.

[@TeaDrinker3000]

The accuracy of the Fight Club reference was genius

[@Jhf_eclipse]

I have no idea how zombie versions of Mario Bros characters chasing me in a Walmart parking lot could be a compilation of things I've done during the day and or mimics my reality.

[@dinadina2000]

We'll maybe maybe you went shopping at Walmart and while you were there you passed a Mario Wii game and/or a season of the walking dead or something

[@Jhf_eclipse]

Dina Rubina That's a great explination.

[@dinadina2000]

yeah i'm just astrong believer in the it's got to do with your life directly theory (noon technical term) but your welcome

[@Akronological95]

Personally, I have forgotten nearly every dream I had (of all the nights and dreams i had in the 15 years i've been alive, I can only recall about 12). But the dreams I DO remember seem to relate to personal things, such as family trip, a show I used to watch, a nightmare of my worries, or a nightmare about some worries I had during a family trip while watching TV

[@greoge1381]

Robert Cline I can only remember 1 lol. From when I was 7ish. I was being hunted by a(n) crocodile or alligator (don't know which) and I am 14

[@Sapnasharma-xj1vr]

I once dreamt about my best friend having duck feet and james Corden forcing her to give them for his "spill your guts or fill your guts" I came to defend her and somehow ended up in a carpool karaoke with me and hank green singing "This isn't Hogwarts" together😂

[@DareToRS]

Did anyone else happen to notice the blood-spattered, burgundy-jacketed man in the thought bubble at 4:34? Potential easter eggs aside, a great video, as always! Loving all of the CrashCourse episodes so far!

[@vampbat]

I've read Mike Birbiglia's book! It's legit one of my favorite things I've ever read, so happy to see his experiences discussed here!!

[@catstate]

Really surprised you didn't reference lucid dreaming or sleep paralysis!

[@MichelleTapp405]

He's done videos about that on SciShow- check them out, they're cool! :)

[@catstate]

I've seen them ^^ I just figured he would at least mention them, hehe x3

[@PennyPLove]

WATCHING WITH A FRIEND: Friend: We spend 1/3 of our life sleeping! That stinks! Me: I'm okay with that.

[@johnnyr25]

Wow. An episode about dreams without one Inception reference. I'm impressed....Hey. Why does this top keep spinning...

[@annabelilo8530]

Now .. This is Gold .

[@olliekinsey9815]

Dreaming is my favourite thing :) I've never had a bad dream as far as i can remember, and my dreams are always an incredible display of emotions and events. Ive even had a few lucid dreams! I wish i could just dream forever, way more enjoyable than being awake

[@EitanLevinzon]

awesome fight club reference! 4:30

[@1234kalmar]

I once dreamt that I was out in the garden. Everything seemed okay, except for the black clouds. Then I heard thunder... My dad appeared (out of nowhere) and said: "hmm, the shields are holding nicely, the aliens won't get in anytime soon." O.o Even wierder, was my response "The shockwaves will finally make it rain." It was after i woke, when it dawned upon me: Don't watch 6 episodes of SG atltantis in one day.

[@JadehavenAcademy]

When Hank was talking about how narcolepsy could get in the way of pole vaulting I imagined an Olympic athlete falling asleep mid vault and just face planting.

[@tigger8163]

I love watching psychology videos like this I've been on a little binge

[@croaklikeatoad4384]

I was having a bad dream once, but I hadn’t gotten to the worst part yet and I really didn’t want to. I actually managed to reach up and pull my eyeball open to wake myself up.

[@Whyeld]

What about Lucid dreams?? I have them nearly every night where I can "rewind" my dream and change it to how I want it to go. I typically have them in nightmares when something gets me trapped or I can't shut a door so I just rewind it and try again. I do have Insomnia so does that make me more likely to Lucid dream when I do fall into REM? because I know that people hardly ever Lucid dream and I do it all the time. (It's not as fun as it seems when it happens every night. Sometimes I just want it to play out but then my body forces it to rewind.) And sometimes when it "rewinds" it just does the same thing, it can take me up to like 20 times of "rewinding" in my dreams for it to change but I know I'm dreaming... I don't really know how to explain it but it is confusing. Thanks Drew

[@drpuppy1989]

So, I was on my computer while watching this on my phone and when he said, "Stop breathing" my computer shut off.

[@ItzhakEthanEskimo]

4:34 Fight club reference

[@skorptheengineer]

I love these videos. They are awesome. Side Note: Twice in my life I've had a shared dream with another person. Both times it was with a girlfriend. In one I dreamed she got too close to the edge of a cliff and she fell. I dove after her and caught her. In her dream we were walking together and she peeked two far over a cliff and lost her balance. We woke up and I was holding her tight. I apologized for scaring her and I told her what happened. She looked at me like I was insane and then shared her dream.

[@susiedalziel2171]

really love these crash course videos. best on the net. thanks guys x

[@gabrielagarcia5700]

So, on the day of my 16th birthday, I went ice skating. The problem is, I had never gone ice skating before. Long story short, I kept falling on the ice. By the time I got home that I went to bed I had started recalling my time on the ice and that's when I suddenly had imagined myself slipping and falling and my body and jerked so hard it almost woke me.

[@SuperAngryPacman]

What other lifeforms dream? Like, where did it start appearing in the evolution of life? Is it a thing all animals do (I'd imagine no)? Is it a vertebrae thing? I NEED TO KNOW.

[@sylviebutts]

en.wikipedia.org/wiki/Dream#Dreams_in_animals "all mammals experience REM.... dolphins experience minimum REM, while humans remain in the middle and the opossum and the armadillo are among the most prolific dreamers"

[@TheFireflyGrave]

sylviebutts Fascinating. I'd never have pegged opossums as big-time dreamers.

[@courtney1612]

I'm watching this at 2 am and i have class at 6

[@josesblima]

+courtney de Villiers OMG are you in my class?

[@iainturbarbie1101]

Courtney 6 WTF THAT'S EARLY

[@purplefire2834]

0:32 "Sleep is just another state of consciousness" The Tripping tile and the music made me laugh 1:30 "... or in aesthetic oblivion" 5:15 "... or pole vaulting" Also good lines

[@hannahschnell58]

Thanks Hank! This helped a lot on my Dreams Inquiry Project thing.

[@headrockbeats]

I've never had strange dreams. Interesting ones, yeah, lots, but never "strange". They always feel internally-consistent and, at least to some extent, realistic. I've always wondered what it must be like for all those people who dream up really weird s***.

[@BriWhoSaysNi]

Idk about anyone else who has weird dreams, but mine are almost always bizarre and on the one hand it's weird to wake up after dreaming about being chased through your house by a giant spider or being Scooby Doo with a mummy chasing you around a playground, but it's also kind of nice to be able to concretely differentiate between dream and waking. Like, I've never woken up afraid I was still in a nightmare or anything like that.

[@amiablehacker]

Same! I can usually interpret my dreams easily. They're usually connected with things going on in my life or whatever. So when friends talk about their dreams, I feel immensely boring. Haha

[@TechyBen]

You have no idea. Being a conveyor belt was one of the strangest. Though I'm not usually inanimate objects... in my dreams. :P

[@headrockbeats]

I wonder if science has any idea about percentages on this. Is it more common to have weird dreams or realistic ones?

[@thenekom]

For me it's usually one of two things: A familiar place that I somehow KNOW I am at, yet everything is out of place (factory in the middle of a patch of forest that I somehow KNOW I'm in, etc), or something just totally off the wall, like the one I had about my brain being spaghetti and merging with the brain-spaghetti of another entity that suddenly knew all of my thoughts. Might not sound scary, but it was terrifying to actually dream that. Hard to explain.

[@thepip3599]

I've been writing down my dreams for a while, here they are. A lot of stuff is misspelled, in bad grammar, and/or just plain are difficult to understand, but I was really tired when I wrote them down. They are really weird. Enjoy I had word dream that we were at our church and we were dressed as Greeks and Romans, except Elliott and those really anoying kids he hangs out with, they were dressed like Vikings. Then I made friends with them, and they somehow seemed awesome, and had a medieval-style lair. They showed me how to go through one of the doors in the church without being noticed. Then someone (a woman) fell down the stairs and were dying and delirious . They said they wanted to be on this side of the yellow line. I had to sneak past them, and go through the door in the secret way I learned. Then I got help, and he thought I was kidding, but I showed him, and while I was gone tons of people had gathered in that room, and were running around being crazy, and suddenly Matt was here, and said that she isn't the same person, she's, changed. Then he stabbed her above the eye and said something about Doritos. Then I woke up. I had a weird dream where I bread a dog with a cow using a turnip, and got a vegetable dog. It was a husky. There were gross candy caramel things who've were apparently impossible to make they had them at the mall. Also, it was in a mall. I had a weird dream, that Rhett and Link apparently always say that are sponsored by Disney, as a joke, but they never are. Then I was in the awesome elevator at the mall that used to have a bad food court, that said it had sushi, but it lied. Anyway I was in the elevator, and suddenly it was a pool, and there was a bigger pool underneath, and the one we were in was tiny, like a roller coaster car, and it started moving, like one, and then there was a loop-de-loop, and my iPod fell into the water below, and my books, and me, and that's about when I realized that it made no sense, and I was having a nightmare, so I woke up. It was really weird, because I had been upside-down in the dream, but not in real life, and I'd been on the end of the bed I don't usually sleep on, so i was waking up I was very confused, about whether I was still dreaming or not, and which way was up, until I woke fully within a second. I had a dream that that there was a game about roller coasters and cats to "improve your Spider-man skills". The blue cats were evil.

[@rumiahmed1494]

I got real exited when he said David Lynch

[@paolaeast]

+Rumi Ahmed me too, lol

[@rumiahmed1494]

you like twin peaks?

[@beback_]

I got excited when he mentioned Terry Gilliam!

[@AimeeColeman]

Same ^.^

[@johannauhl8862]

after a few episodes of crash course,I feel like I have learned more than I have learned in school today.Thank you!

[@lokynokey4822]

9:45 that just woke me up. Need to watch again.

[@SparkySywer]

We watched Crash Course in school, I learned just how many nerd fighters recognized Hank.

[@katyn5237]

when you actually fall asleep while you're supposed to be learning about dreaming.

[@kaitlinalcontin7967]

I think Matt Damon and your bananababy-raccoon hybrid may have scarred me for life

[@Elexica]

The intro to this video is just brilliant.

[@-dreameasy-4449]

I am glad with this video as I am a teacher of psychology specializing in dream studies and I am happy that crash course was very factual.

[@cageyourheart8772]

Tetris dreams are an all too common occurence for me.

[@mewichigo4924]

Cage Your Heart Your username and profile picture combined are amazingly awesome.

[@swiftlylovestruck]

Cage Your Heart never dreamt of this.. :P

[@LilyMyLolita]

+Mew Ichigo Indeed! Nice pun.

[@mikeg5616]

the AP test brought me here.

[@tpanda]

Same 😫

[@mayaceasar55]

+Tianda Mahingen OMG SAME. Best of luck today

[@mikeg5616]

it was not that bad. i would talk about it but do not want to get in trouble. LOL

[@SugarMania234]

+Michal Gaik CLEP test brought me here lol

[@hyunjoong1000]

same!

[@AceGinger]

Back when I was obsessed with beating Marathon Tetris I dreamed of blocks and music! That's hilarious!

[@vStreetStruckv]

A man named Jerimiah Molfese talks about the process of being able to get to the Theta state of REM sleep. He's someone who's a natural when it comes to Lucid Dreaming. Before I never use to care about this sort of thing, but when I followed the process 3:16 (< thats exactly what happened step for step)

[@shoelace19]

Your voice tone & rhythm of your videos do put me to sleep and make me zone out.

[@JamesRoyceDawson]

And here I am, avoiding sleep to watch this video :P

[@nadiact-ie5hy]

"I fell in love the way you fall asleep; slowly, and then all at once." - Hazel, TFiOS by John Green Also, Hank, did you just give birth to your brother?

[@BeCurieUs]

Who hasn't!

[@JakeTheHuman_]

diggin the Reel Big Fish shirt

[@macycamille]

Omg this channel is so much better than DNews!!

[@EpochSecutor]

So did anyone else spot the Fight Club reference in the video?

[@MareSwiss]

+Orion the Sylveon u mean at 4:34, well done sir ;D

[@evanknowles4780]

+Orion the Sylveon was it that he didn't talk about Fight Club?

[@Erodam]

+Evan Knowles lmfao

[@mangotango2481]

I love the references that are put in these videos.

[@dantedante21]

ok good was thinking no no one commented

[@oOBlueVoltageOo]

What happens when you open someone's eyelids during REM sleep?

[@oOBlueVoltageOo]

Katherine Gillum or you'd be too deep in sleep to even notice

[@MegaMGstudios]

you'll see some freaky eyeballs

[@michaelcurrier4492]

Does anyone else only have dreams that make sense? Not that they're just like normal life, but a story that's plausible and doesn't violate it's own rules. My teeth never fall out and I don't fly, I just live through a decent action or drama movie every night.

[@RichardCraig]

I have both types of dreams... sometimes it's just a perfectly plausible scenario, like a movie, and then other times they're totally batshit insane... one time I was being chased by a goose, then I sat down, started to pet it, and it turned into a rabbit and sat in my lap... and that's one of the less weird dreams I've had.

[@MUGENanaya]

I had a dream where i sat down and played DDR on my computer That's it.

[@leerwesen]

I've had dreams where I'm going about my daily life but I'm in a video game... Like I'm walking down the street next to a parked car and feel like I want to hit the "f" key ;) Or I feel like I have a green diamond hovering above my head o.0

[@TheCookiezPlz]

Forget internal consistencies. My dreams are usually 90% externally consistent too. To the point where it's not uncommon for me to think my dreams *are* real life even after I wake up. I once had a dream starting in the bed I fell asleep in, went outside, to the place I was staying at the time, came back, played some video games, went back to bed, then woke up in real life with going to bed in the dream being the last thing I remembered. It took me 2 days to figure out it was a dream, because the only clue I had was the fact that nobody else could remember anything I did in the dream, and everyone thought I was delusional, which wasn't far from the truth. I think my brain just likes to fuck with me. Or maybe I just have no imagination.

[@thebigchickenn]

I usually have crazy dreams but when I have a dream that seems like real life I think of good ideas in it.

[@stellar8689]

I read in a book that it s during Slow Wave Sleep (which is deep sleep) that memories are formed. This theory was supported with experiments, eg: learn X thing with scent of flowers. When scent of flowers is given to the person during their sleep, it ONLY helps them remember the X thing they learnt when they're in S.W. Sleep (thus it was tirggered during this learning phase and helped them remember X)

[@rebeccaf6300]

My grandfather was a sleep specialist. Its so cool that I already knew all this.

[@mlpcritic6738]

I'm subbing for the Reel Big Fish shirt

[@chinamanandfriends]

I occasionally get this sensation, when I'm just about to wake up, where I'm dreaming about a person speaking very profound ideas and using clever words that I wouldn't normally even be able to come up with while conscious. Of course I don't remember any of it when I finally wake up, but when he's saying these things I get mind-blown by the sheer complexity. In this state I am aware that I'm dreaming, probably lucid, but I'm not able to control it. Does anyone know what on earth I'm talking about, or have had similar experiences? It feels like a very potent source of creativity that I would love to be able to tap into.

[@dcb3161]

Haha, I've had similar dreams. I know I am dreaming, but can't controll the dreams. It's quite intense and really fun, wish I still had them :(

[@isaachonzel9486]

De Co Lucky ppl i just stare at a dark void when i sleep now. I maybe get 20 active dreams a year where i do something anything besides staring at a void.

[@first782]

Bob Shatner Sometimes, but Im having a chat with them and I know my mind is trying to emulate a friends speech when I wake up, for some reason its always about religion.

[@meaganwallwork5395]

it's god

[@darraghtate440]

Okay, seeing this in my newsfeed right now, when I have been awake for 40 hours, and seeing a picture of Neil Gaiman when I have both a copy of Sandman (volume 8) and American Gods on my bedside table right beside me... I think I'm dreaming.

[@darraghtate440]

Also, my bed is an a balcony so if I freak out like that dude, I'm falling 10 foot down a ladder. Damn.

I noticed how the last emotion of the night greatly influences the dream scenario or a key aspect. Last image associated with a deep raw emotion = dream aspect - moment - scenario pathway

[@mire1390]

I get lucid dreams when I have the same setting in a dream, since I’ve dreamed it before it reminds me that it’s just a dream so I fly, or develop superpowers

[@A.Mayflower127]

I love the Fight Club reference

[@Naeisonfire]

cramming bc AP test tmrw

[@madisonnichols8310]

niaz kilam how did you do?😂

[@vijaynyaya6603]

wonder what Freud would have thought about dreams after learning about our present day understanding of sleep?

[@laurenmeyer9817]

One night I stayed up late studying for my Algebra 2 test, and there was this one concept that was a bit confusing to me, completing the square. Well I went to sleep right after I studied and I dreamed about doing completing the square and I woke up understanding clearly how to do it. It was really strange! So shutout to dreams for me making an A on my Algebra test.

[@leopardtalon1956]

I actually had night terrors caused by the medication I took when I was young. When I switched medication my night terrors lessened from about 2-3 a week to about 1 every two weeks. Ultimately they lessened even more and then disappeared. My mom has vivid memories of me in those states and I even have memories of the hallucinations after I was able to wake myself up.

[@JadeCryptOfWonders]

I once dreamt that Mary Poppins was interrupted by a monster truck rally crashing through the matte painting while a muscular black man at the helm wearing sunglasses shouted YEEEEAAAAH! as the film was invaded by blobs of the colour red. I don't think Sigmund Freud could interpret that from the manual.

[@doperedbunny]

you were trippin

[@taku7785]

That is the weirdest dream I've ever heard.