シャドーイング練習: Why You Don’t Need 8 Glasses of Water a Day | Body Stuff with Dr. Jen Gunter | TED - YouTubeで英語スピーキングを学ぶ
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You know that whole thing about drinking eight glasses of water a day?
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You know that whole thing about drinking eight glasses of water a day?
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Sorry to have to tell you this, but it's a myth.
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It won't make your skin brighter, it won't make you feel clear-headed, it won't make you more energetic.
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It might, however, make you have to pee a lot.
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Many people don't understand the biology behind their bodies.
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There's a lot of misinformation out there, but the truth is that when you understand how your systems function, you're able to make better decisions.
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You're not as prone to fall for hype or pseudoscience.
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You'll feel empowered to understand what's really going on.
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One myth that really bugs me is the idea that you need eight glasses of water a day.
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Honestly, it's pretty shocking how ingrained it is.
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You hear it on TV, you see it in articles.
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Like I said, it's nonsense.
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For the most part, your body will tell you when you need to drink water, because you've got these wonderful, amazing, undervalued things.
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Kidneys.
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Kidneys are the bean-shaped organs located to either side of your spine, right below your ribs.
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They're often thought of as a filter or a waste removal system, but that doesn't do the kidneys justice.
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Your body is an environment where everything, fluid and chemicals, need to be in a delicate balance.
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The kidneys do a lot of the heavy lifting when it comes to this balance.
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Every day blood in your body passes through the kidneys.
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What you eat, drink, the temperature around you, how much you exercise, all of this affects what's going on in your body.
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Your kidneys, along with your nervous system and various hormones, are constantly watching many gauges and making adjustments about fluids,
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salt, and levels of other substances in real time.
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They do this with about one million tiny structures called nephrons.
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These nephrons are kind of like workers on a conveyor belt, actively adding things and taking things away, things like sodium, glucose or sugar,
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calcium, amino acids, and water, to make sure the body maintains homeostasis or balance.
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If levels of anything get too high or too low, then that can be harmful,
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and it is the job of the kidneys to keep the levels of many of these substances in the just right zone.
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Substances that aren't needed leave the kidney and head to the bladder, where you excrete them in the form of urine.
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So where do 8 glasses of water a day fit in?
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They don't.
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Notice that I did not say that the kidney function is improved with excess water.
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Imagine that you're sweating a lot, so you're losing water from your blood.
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The kidneys know your blood volume is dropping ever so slightly, and that your blood is getting ever so slightly saltier.
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They compensate by absorbing more water back into the blood, making the urine more concentrated.
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If the kidneys sense enough fluid can't be reabsorbed from the urine, you're signaled to drink, meaning you get thirsty.
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If you don't have fluid available, the thirst message gets stronger and stronger.
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A person facing real dehydration won't be unsure if they need water.
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They'll do whatever they need to get it.
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It's one of our most basic instincts that's evolved over a
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very long time in environments where clean water wasn't nearly as readily available as it is today.
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So thanks to your kidneys, your body is really good at maintaining hydration.
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But if you stop counting eight glasses of water a day, how much should you be drinking the answer is simple there is no should
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when you feel thirsty drink some water you can trust your body unless you have kidney stones
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or elderly sometimes our messaging systems get a little worn with age
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or your doctor has told you otherwise constantly monitoring how much
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water you drink is not really necessary here's a point that's often missed every single thing you consume contains water.
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Your morning coffee has water, so does your breakfast.
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And that's snack, an apple, an orange, a glass of juice, a granola bar.
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Just like you, they're made of water too.
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So as long as you're listening to your body's internal sense of thirst, there's really no need to be counting those eight glasses.
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コンテキストと背景
このビデオは、医師であるジェン・ガンターによる「一日に8杯の水を飲む必要はない」というテーマに焦点を当てています。多くの人が信じているこの神話は実際には間違いであり、私たちの体の生理学に関する誤解が多く存在していることが強調されています。ガンター先生は、腎臓の働きや体内の水分調整のメカニズムを解説し、日常生活での水分摂取について正しい理解を促します。このコンテンツは、英語を学ぶ人々が英語でのコミュニケーションスキルを向上させるための貴重なリソースとなります。
日常会話のためのトップ5フレーズ
- 「水を8杯飲む必要はない」 - 多くの人が信じている神話に対する疑問を投げかけるフレーズ。
- 「腎臓は体の水分バランスを保つ重要な器官です」 - 腎臓の機能について理解を深めるフレーズ。
- 「体は水分の必要性を教えてくれます」 - 自身の体のサインを大切にすることについての強調。
- 「必要な水分は食事からも摂取できます」 - 食品に含まれる水分についての認識を促すフレーズ。
- 「喉が渇いたら水を飲むのが一番です」 - 自分の感覚に従うことの重要性を示すフレーズ。
ステップバイステップシャドーイングガイド
このビデオの内容を駆使して、英語シャドーイングを行う際の具体的な方法を以下に示します。これにより、英語スピーキング練習や<strong>英語の発音を良くする</strong>ことが可能になります。
- ビデオを最初から通して観賞し、話の全体の流れを理解します。
- ビデオを再生しながら、音声を聞いてスクリプトと照らし合わせます。特に腎臓や水分摂取に関する部分に注目してください。
- 重要なフレーズを選び出し、それを繰り返し声に出して練習します。この場合、フレーズの発音やリズムに注意を払いましょう。
- 少しずつビデオの音声に合わせて、自分の声を重ねていく「シャドーイング」を行います。
- 自分の発音を録音し、最初の音声と比較してみてください。これにより、影響を与えられやすいポイントを確認できます。
このような手法を用いることで、IELTS スピーキング対策にも役立つ実践的なスキルを身につけることができます。
シャドーイングとは？英語上達に効果的な理由
シャドーイング（Shadowing）は、もともとプロの通訳者養成プログラムで開発された言語学習法で、多言語習得者として知られるDr. Alexander Arguelles によって広く普及されました。方法はシンプルですが非常に効果的：ネイティブスピーカーの英語を聞きながら、1〜2秒の遅延で声に出してすぐに繰り返す——まるで「影（shadow）」のように話者を追いかけます。文法ドリルや受動的なリスニングと異なり、シャドーイングは脳と口の筋肉が同時にリアルタイムで英語を処理・再現することを強制します。研究により、発音精度、抑揚、リズム、連音、リスニング力、そして会話の流暢さが大幅に向上することが確認されています。IELTSスピーキング対策や自然な英語コミュニケーションを目指す方に特におすすめです。