Prática de Shadowing: The Habits That Keep Your Brain Sharp | Dr. Sanjay Gupta - World Governments Summit - Aprenda a falar inglês com vídeo
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The brain can not only stay healthy throughout your entire life, but also continue to improve.
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He is Dr. Sanjay Gupta, American neurosurgeon and the chief medical correspondent for CNN.
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And there's now a way that we realize and appreciate that within our skulls is an entire universe.
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As our imaging grew more sophisticated, we started to see what the healthy brain really does look like.
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and it's we talk a lot about the health of our bodies
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but not as much about our brains
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and i think for a lot of people there's this belief
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that the brain is something that's not capable of really being optimized
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or maintained i've been a neurosurgeon for some 25 years now
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and i think a lot of people think about the brain
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sort of as a black box you measure a black box by its inputs and its outputs,
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but you don't really get to see the inner workings of the brain.
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And I think that's why people have thought for a long time that it's immutable.
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It's incapable of being changed in some way.
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The brain is static and it's fixed.
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And one of the things I really wanted to convey to all of you today is that that's not the case.
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Perhaps more than any other organ in the body, the brain can not only stay healthy throughout your entire life,
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but also continue to improve.
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Over the last quarter century, we learned something that was pretty revelatory in the world of neuroscience.
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We learned that you could continue to grow new brain cells at any age.
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The conventional wisdom, even what I learned when I was studying neuroscience a quarter century ago,
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was you got a certain number of neurons and that was basically what you got.
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You drained the cash over the years of your life.
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But that's not the case.
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We believe that in part because the only time we really inspected the black box was when there was a problem, when there was a tumor or trauma.
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We did not get to see the brain in sort of its healthy state.
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We did not get to understand how the brain behaved most of the time.
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As our imaging grew more sophisticated, we started to see what the healthy brain really does look like.
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And it's stunning.
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Inside your skulls right now, your brain is pulsing.
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It's robust.
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It's changing.
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And it's growing.
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And there's now a way that we realize and appreciate that within our skulls is an entire universe.
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There are more neurons in your brain than there are stars in the sky.
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I spent a lot of time talking to scientists who worked on this research and I asked them, how do they fundamentally live their lives now differently because of what they've learned?
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And the way
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that I sort of broke this down is into the big buckets of how we live our lives through movement,
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through nourishment, through rest, through connection, and through discovery.
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I think movement is the most reliable way to grow new brain cells.
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The more you move, the more you are sending signals essentially to your entire body that you want to be here, that you want to be healthy.
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But most remarkably, you're sending a signal for the brain to create a substance known as BDNF, brain-derived neurotrophic factor.
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You don't need to remember that, but think of that as sort of the miracle grow for the brain, as one scientist put it to me.
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It's the substance that is actually promoting that neurogenesis, telling new brain cells to grow.
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You cannot ingest it.
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You cannot eat it.
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It can only be made by your own body.
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The brain is very sensitive to glucose.
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So as your blood glucose starts to really rise, the receptors in the brain, instead of absorbing all that energy, they turn off.
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They simply stop absorbing any energy.
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So at the same time, you're eating a really, really calorie-dense meal full of a lot of sugar.
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You could be overstuffing your body and starving your brain at the same time.
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That's a difference between the brain and the rest of the body.
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Hydration, critically important for all functions hydration is one of the substrates that is necessary for BDNF,
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but one needs to keep in mind that the brain itself is 85% water.
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What that means is just 1% dehydration can lead to a 5% decrease in cognitive function.
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1%.
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I mean, I think this is one of the most under-recognized things that we talk about with regard to cognition overall.
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A 2% decrease in hydration can result in acute short-term memory loss, objective problems with mathematical computations,
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and an inability to store long-term memories.
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Just 2%.
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So sugar and water, so critical when it comes to brain health for those reasons.
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Sleep, rest, again, we know is important.
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But for the brain, sleep is not a period of inactivity.
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In fact, it's one of the most metabolically active times for the brain.
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And we know that your brain is constantly creating waste products and those waste products are constantly being cleared,
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but it is during sleep when that waste clearance is most efficient.
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Sleep is really important for clearing away some of the substrates that may be the precursors to things like amyloid plaque,
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which is associated with Alzheimer's disease.
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We also know that sleep is when you actually take your short-term memories
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and you actually put them into a long-term memory store.
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O Cenário: Como manter o cérebro saudável e o que isso tem a ver com o seu aprendizado de inglês
No vídeo, o neurocirurgião Dr. Sanjay Gupta compartilha descobertas revolucionárias sobre a plasticidade cerebral, mostrando que o cérebro pode se melhorar ao longo da vida. Essa ideia de "mudança contínua" é similar ao que acontece quando você pratica shadowing em inglês: com treino, seu cérebro adapta-se, melhorando a pronúncia e a fluência. É um cenário real que conecta saúde cerebral a estratégias práticas de aprendizado.
Trechos Úteis e Colocações para Memorizar
- "Continue to improve" – Expressão comum para falar de progresso contínuo. Exemplo: "My English continues to improve with daily practice."
- "Conventional wisdom" – Refere-se a ideias aceitas por todos. Exemplo: "The conventional wisdom about language learning is that you need to live abroad."
- "Brain-derived neurotrophic factor (BDNF)" – Termo técnico, mas útil para conversas científicas. Pronúncia: /breɪn dɪˈraɪvd ˌnʊroʊˈtrɒfɪk ˈfæktər/.
- "Send signals" – Usado para descrever comunicação interna. Exemplo: "Exercise sends signals to the brain to grow new cells."
- "Break down into big buckets" – Significa organizar em categorias. Exemplo: "Let's break down the topic into big buckets: speaking, listening, reading, writing."
Seu Desafio de Shadowing: Pratique Agora Mesmo!
O shadowing em inglês é uma técnica poderosa para melhorar a pronúncia e a fluência. Escolha um trecho curto do vídeo (30 segundos) onde Dr. Gupta fala sobre "movement" ou "BDNF". Repita o áudio várias vezes, imitando a intonação, o ritmo e a ênfase. Use o shadowspeaks para sincronizar sua voz com a do falante – isso ajuda seu cérebro a adaptar-se à pronúncia natural. Depois, grave sua própria voz e compare com o original. Observe como as palavras como "neurogenesis" ou "robust" são pronunciadas. Essa prática de conversação em inglês, feita diariamente, fará com que você absorva padrões de fala sem esforço. Lembre: o cérebro cresce com desafios – e o shadowing é o melhor jeito de estimulá-lo nesse processo!
Essas estratégias, combinadas com a ideia de plasticidade cerebral, mostram que melhorar a pronúncia em inglês é possível para qualquer pessoa – basta treinar com método. Comece hoje e veja os resultados em poucas semanas!
Gramática neste vídeo
As estruturas que o falante mais usa, com as palavras exatas do vídeo:
| Estrutura | No vídeo |
|---|---|
| Voz passiva be + particípio passado — o foco está no que acontece, não em quem faz | being optimized · being changed · be made |
| Present perfect have/has + particípio passado — uma ação passada que ainda importa agora | i've been · have thought · they've learned |
O que é a Técnica de Shadowing?
Shadowing é uma técnica de aprendizado de idiomas com base científica, originalmente desenvolvida para o treinamento de intérpretes profissionais. O método é simples, mas poderoso: você ouve áudio em inglês nativo e repete imediatamente em voz alta — como uma sombra seguindo o falante com 1-2 segundos de atraso. Pesquisas mostram melhora significativa na precisão da pronúncia, entonação, ritmo, sons conectados, compreensão auditiva e fluência na fala.