Pratique du Shadowing: What staying up all night does to your brain - Anna Rothschild - Apprendre l'anglais à l'oral avec YouTube

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You're just one Roman Empire history final away from a relaxing spring break.
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You're just one Roman Empire history final away from a relaxing spring break.
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But you still have so much to study,
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so you decide to follow in the footsteps of many students before you and pull an all-nighter.
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When you stay up all night,
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you're fighting against your body's natural circadian rhythms.
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These are the cyclical changes that virtually all living things experience over the course of a 24-hour period,
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such as sleeping and waking.
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And they're heavily influenced by light.
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But for the moment, you're alert and powering through the rule of Julius Caesar.
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As the sun sets, your eyes send signals about the dwindling light to a part of your brain called suprachiasmatic nucleus.
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This is basically your circadian rhythm's clock.
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It alerts your pineal gland to start producing melatonin.
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That's the hormone that helps prepare your body for sleep,
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and levels start to rise about two hours before your normal bedtime.
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At the same time, neurons in the hypothalamus and brainstem release a compound called GABA.
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This slows down activity in your brain and can have a calming effect.
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You're approaching your normal bedtime.
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Since the brain needs to cool down before sleep,
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your core body temperature starts to drop.
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Huh, that map kind of looks like a face.
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Uh-oh, your attention has started to drift.
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Throughout the day, your brain has been releasing a waste product called adenosine.
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The more adenosine latching onto receptors in your brain,
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the more tired and inattentive you become.
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Time for a cup of coffee!
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Caffeine blocks adenosine from binding to receptors,
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which can give you a boost of energy.
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However, it might also make you jittery and increase your anxiety.
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You're acing these flashcards.
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Right now, these dates and names are being stored in an area of the brain called the hippocampus.
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Normally, when you go to sleep,
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memories like these are consolidated and slotted into long-term storage in your brain's neocortex.
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So it's a good thing you only need to remember this information through tomorrow.
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Micro sleeps are unpredictable periods of sleep that last for only a few seconds and are triggered by sleep deprivation.
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You stretch in an attempt to stay awake,
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but at this point your motor skills have also taken a hit.
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Studies have found that people who have been awake for 19 hours have similar coordination
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and reaction times as those who have been drinking.
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As the sun rises, your pineal gland stops releasing melatonin.
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You feel a second wind come on.
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And despite everything, you leave for school in a really good mood.
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Sleep deprivation can briefly induce euphoria.
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It's caused a temporary boost in dopamine levels,
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which can, unfortunately, also lead to poor choices.
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The final starts off well.
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It's all multiple choice.
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But then you get to the essay portion.
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It's thought that during sleep,
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our brains process ideas and draw connections between new memories and old ones.
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So your sleepless brain might be able to regurgitate facts,
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but you're finding it more difficult to find patterns or problem solve.
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You stare at the blank page, defeated.
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Get out!
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You head up to your room, anxious and irritable.
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Your amygdala, the part of the brain involved with processing emotion, is going haywire.
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Your prefrontal cortex usually keeps your amygdala in check,
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but it still isn't firing on all cylinders.
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Your bed has never felt so sweet.
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After one sleepless night, your body and brain bounce back pretty quickly.
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Which is a good thing,
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since we can't always control how much sleep we get.
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But going for long periods without a good night's sleep,
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or constantly changing your bedtime can take its toll.
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Regularly getting less than seven hours of sleep each night is
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linked to all sorts of health issues from diabetes to stroke to chronic pain.
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It also leaves you more vulnerable to developing mental health issues like depression.
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Your sleep schedule can even affect your grades.
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Studies have shown that college students who keep regular sleep hours have,
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on average, a higher GPA than students who don't.
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So the next time you're thinking of pulling an all-nighter,
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remember that Rome wasn't built in a day,
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or for that matter, one night.
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Clearly, physical rest can have a huge impact on your body and brain.
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But what about mental rest?
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Learn what happens to your mind when you let it wander with this video
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or explore the science of adolescence at ed.ted.com forward slash building dash connections.

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Context & Background

In the enlightening video titled "What staying up all night does to your brain," Anna Rothschild delves into the effects of sleep deprivation on cognitive functions. Using the relatable narrative of a student preparing for a history exam, Rothschild outlines how staying awake disrupts our natural circadian rhythms and impacts various brain activities. The insights provided not only shed light on the biological changes occurring due to lack of sleep, but they also emphasize the importance of a good night’s rest for optimal performance, both academically and emotionally.

Top 5 Phrases for Daily Communication

  • “I need to power through this.” - This phrase indicates determination to complete a task despite challenges.
  • “Caffeine gives me a boost.” - A common phrase to describe the energizing effects of coffee or tea.
  • “I’m starting to drift.” - Used when someone feels sleepy or loses focus.
  • “I’m feeling anxious.” - Describes the feeling of nervousness or worry, often related to stress.
  • “My brain is fried.” - A colloquial way to express mental exhaustion or overload.

Step-by-step Shadowing Guide

To effectively utilize this video for your English speaking practice, consider following these steps with the shadowing technique, which is an excellent way to improve English pronunciation and fluency:

  1. Select your segment: Choose short sections of the video to avoid feeling overwhelmed.
  2. Listen carefully: Play the segment and focus on how Anna Rothschild articulates her words. Pay attention to her intonation and rhythm.
  3. Repeat after her: Once you feel familiar with the section, pause the video and repeat her words. This is your shadow speak moment.
  4. Use a shadowing app: Incorporate a shadowing app to facilitate your practice. These tools can help you listen and record your voice, allowing you to compare with the original audio.
  5. Reflect and improve: After practice, evaluate your pronunciation and pacing. Make notes on any challenging phrases or words, and focus on improving them in future sessions.

By applying these methods, you’ll enrich your English communication skills while also grasping complex topics like those discussed by Rothschild. Engage in regular practice and you will find yourself becoming more confident in your speaking abilities.

Qu'est-ce que la technique du Shadowing ?

Le Shadowing est une technique d'apprentissage des langues fondée sur la science, développée à l'origine pour la formation des interprètes professionnels. Le principe est simple mais puissant : vous écoutez de l'anglais natif et le répétez immédiatement à voix haute — comme une ombre suivant le locuteur avec un décalage de 1 à 2 secondes. Les recherches montrent une amélioration significative de la précision de la prononciation, de l'intonation, du rythme, des liaisons, de la compréhension orale et de la fluidité.

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