25 Rare Facts About Sleep And Why We Need Blankets – YouTube Dictation Transcript & Vocabulary

1.[Music] we spend a third of our lives doing it yet we still don't completely understand this bizarre ritual we carried out each night you lie down your body goes unconscious you see the weirdest pictures in your head and then wake up only to repeat the whole process the next day sleep is funny and here's the proof like I said you spend a third of your life off in dreamland that's about 25 years if you were doing the math we also spend about seven years of our lifetime trying to fall asleep everybody thinks you need eight hours of shut-eye each night but your sleep hour requirement changes throughout your life children need 10 to 12 hours teens need 8 to 11 adults 7 to 8 hours and seniors are fine with six to seven hours now good sleep is necessary for effective work and productivity but good doesn't necessarily mean law some famous historical figures slept very little from two to four hours and this didn't prevent them from doing great things da Vinci Franklin Tesla Churchill and that's not all there's a sleep you tation that allows a person to sleep just 2 to 6 hours and not experience any side effects now if you have a dog or cat then you might have noticed that they make funny sounds while they're sleeping yes they do dream and experts aren't quite sure why or what they say my dog Riley even barks in his sleep temperature is a critical part of sleep and possibly dreams if your room is too cold or hot it can trigger nightmares like you're in a cramped space or a fire some great discoveries were found thanks to dreams for example Mendeleev created the periodic table after he dreamed about it this happens because our brain processes and analyzes all the events we experience throughout the day many experts believe this is why we dream in the first place by the way I love hearing dream stories what's one dream you remember the most or maybe have on a regular basis let me know down in the comments and on to that weird sudden twitch your body might do as you're falling asleep this happens because the brain sends impulses to the muscles it's called a hypnic jerk but why does the brain do it nobody knows for sure our brain shuts off all our muscles when we sleep this is so that you don't run away in real life as you're dreaming about running away from some pursuer but the brain doesn't shut off the eye muscles which is why your eyes can move and they do during the deepest part of sleep a stage called REM or rapid eye movement but what if your brain wakes up and your body muscles are still disabled this condition is called sleep paralysis many people have experienced it at least once in their life and those same people say it's far from pleasant sleep and reality are mixed in this state and individuals can't see hallucinations babies dream in the womb but there are no visual images in these dreams only tactile and auditory sensations our spine relaxes and stretches when we sleep meaning you can be a wee bit taller in the morning than in the evening people sleep under blankets not only for warmth though that does help it's also psychological we relax better thank to the blankets touch even if it's heavy that slightest bit of pressure on our bodies soothes the nervous system much like a hug we also feel more protected when we sleep under the covers a body out in the open makes a person feel uncomfortable and vulnerable especially when you're about to let your guard down and go to sleep and well the blanket thing is just a custom even if you don't feel like you need it it feels weird to sleep without it Japan and South Korea get the least sleep on earth less than six hours New Zealand gets the most a whopping eight hours one of the few places getting the recommended amount college students might not believe me but pulling all-nighters cramming for an exam will help your grade if you're gonna do that do it a couple of days before the big test day the night before get good sleep it helps you retain learned information nobody knows for sure what causes deja vu one of the theories is associated with sleep even though it translates from French as already seen you likely dream something but forgot about it by the morning then in reality you see those events that are a bit like The Forgotten dream have you ever had deja vu a lot of animals like horses and zebras sleep while standing their body has evolved to pull this off so they can run away from danger at any moment some birds the albatross as an example can't sleep while flying there's a whole laundry list of animals dolphins manatees penguins and crocodiles to name a few that sleep with one eye open it's possible because half of their brains are working and watching the situation around while the other half sleeps some people not only snore during sleep but can also grind Nash or clench their teeth this is called bruxism like a lot of things connected to the world of sleep nobody knows the exact causes of this phenomenon sleep is as vital to humans as food and water are a healthy person will live longer without food than without sleep it seems obvious that we need to sleep so that all our body's bits can refresh themselves but no one has fully figured out all the effects sleep has on the body only that we need it and we don't do well at all without it one thing's for sure our body accumulates energy during sleep if you don't sleep for a long time then the body looks for this energy in food not surprisingly lack of sleep often leads to weight gain sleepwalking is another mystery we haven't figured out yet but there are plenty of misconceptions surrounding it you might imagine a sleepwalker with our arms extended out in front of them like a zombie but that's just not the case you often can't even recognize if a person is sleepwalking and waking a sleepwalker won't give them a heart attack but it probably will give them a shock and they might try to fight you it's much better to gently guide a sleepwalker back to bed without waking them if you can many people claim that they don't dream at all but they likely just forget the dreams they do have if you want to remember your dreams then put a notebook or a voice recorder next to the bed as soon as you wake up immediately get to writing or recording the first 90 seconds after waking up are ideal it might take some practice but you will start remembering more and more of your bizarre brain movies if you do remember your dreams how many do you think you have a night one big long epic movie nope it's more like four to six of them each night and your dreams get longer throughout the night it's the final one you're probably recalling before there were alarm clocks people had all kinds of ways to wake up some got up with the Sun at the crack of dawn others depended on their rooster to wake them and in more populated areas it was thanks to the ringing of the city tower there was also a special profession called a knocker upper this probably not very popular fella would walk among houses in the morning and knock on bedroom windows to wake people up for work lullabies how do they work on babies so well well imagine you're a baby again you've had a busy day discovering new things in this world all kinds of smells sounds materials the day you found your toes it was a particularly busy one it's hard to fall asleep at the end of the day when your brain is struggling to analyze such a massive storm of new information but when you hear a lullaby your brain can concentrate on one thing that soothing hypnotic voice your head clears you feel at peace and sleep soon follows on that note I'm getting kind of sleepy myself hey wake up huh if you learned something new today then give the video a like and share it with a friend and here are some other cool videos I think you'll enjoy just click to the left or right and remember stay on the bright side of life