シャドーイング練習: Doing Hard Things Rewires Your Brain | Mel Robbins #shorts - 動画で英語スピーキングを学ぶ

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That uncomfortable feeling that you feel when you are getting to that vigorous type of exercise, whether it's doing a run or it's,
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you know, doing some resistance training where you're really doing hard things, that uncomfortableness, there's also a neurochemical reaction going on in your brain.
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So we have an endogenous, that just means in our body, opioid system, okay?
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Opioids, we're usually thinking of, you know, maybe exogenous ones that people take to help with pain relief, right?
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Like morphine, for example.
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We make our own opioids, endorphins, right?
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Endorphins are something that we make.
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Those are the feel-good opioids that we make in our brain.
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You do make that with exercise, but you also make a type of opioid that makes you feel uncomfortable.
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It's called dynorphin.
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It's responsible for that uncomfortable feeling, that feeling that's like, oh, I want to stop.
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I can't do this.
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It's hard, right?
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Dynorphin is is that uncomfortable like neurochemical that's being produced
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and what that does is when your brain is making that
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and you don't give up you keep pushing past it it
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has this feedback loop in your brain where then your brain goes oh this is
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that bad now it's i don't want to call it bad
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it's the dysphoric feeling i better figure out a way to deal with
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that and adapt and make something good so that later
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when i have that uncomfortable dysphoric feeling i don't feel so uncomfortable
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And so what happens is your brain starts to make more of these receptors.
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Receptors are things that neurochemicals and neurotransmitters and things like that bind to to have an effect.
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So they make more of the receptors that bind endorphins.
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They're called mu opioid receptors and they become more sensitive to endorphins.
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This happens only when you're getting that uncomfortable dynorphin you know flooding your brain
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and so what happens is then later on
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when anything happens that's a little bit pleasant you're going to feel it better
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and for a longer period of time and so
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that just makes everything easier when you have that sensitive
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that sensitization to these endorphins
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which we are making all throughout the day little things like
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yo seeing your friends smile like all these little things they're making you make endorphins
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And it's just a matter of how powerful are you going to feel that endorphin.
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And so the uncomfortableness of the dynorphin is what is doing that.
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But you have to engage in the hard, uncomfortable thing that makes you feel that dysphoric feeling.
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That makes so much sense.
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So if you force yourself to do some form of exercise, even just for a minute, even for three minutes, even for 10 minutes,
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it paves the way for you to now really magnify all of the beautiful
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and wonderful and comfortable things that follow it because you got the discomfort out of the way.

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このレッスンの語彙とスピーキングのポイント

このC1レベルのスピーキングレッスンは、動画「Doing Hard Things Rewires Your Brain」を教材にしています。 繰り返し出てくる語は次のとおりです：uncomfortable, endorphin, brain, opioid, feeling。 この動画には、シャドーイング用の文が40文、単語が488語あります。 音声の長さは2:56です。 話す速さは1分あたり約166語で、日常会話に近い自然なペースです。 単語の85%は英語の頻出3,000語に含まれます。残りは練習の前に確認しておきましょう。

この動画の重要語彙

動画の中で特に難しい単語8語を、発音と意味つきで紹介します。

単語発音意味
endorphin 名詞/ɛnˈdɔ(ɹ)fɪn/エンドルフィン
magnify 動詞/ˈmæɡnɪfaɪ/拡大する, 大きくする
morphine 名詞/ˈmɔɹˌfin/モルヒネ, モルフィン
neurotransmitter 名詞神経伝達物質
sensitization 名詞感作
vigorous 形容詞/ˈvɪɡəɹəs/精力的
discomfort 名詞/dɪsˈkʌmfɚt/不快, 不安
adapt 動詞/əˈdæpt/適応する

動画に出てくる句動詞

単語意味
give up 動詞降服する

注意したい発音

話し手はdon't, you're, they'reなど、短縮形や弱形を10回使っています。聞こえたとおりの短い形で発音しましょう。

  • 長い単語（アクセントの位置に注意）: endogenous /ɛnˈdɑ.d͡ʒə.nəs/, exogenous /ɛkˈsɑ.d͡ʒə.nəs/

日本語話者が苦手な音：

  • /f/ — 「フ」ではなく、上の歯と下唇で出す: endorphin /ɛnˈdɔ(ɹ)fɪn/, magnify /ˈmæɡnɪfaɪ/, morphine /ˈmɔɹˌfin/, discomfort /dɪsˈkʌmfɚt/
  • 子音の連続 — 間に母音を入れない: bind /ˈbaɪ̯nd/, adapt /əˈdæpt/

この動画での練習方法

  1. まず声を出さずに動画を最後まで聞き、知らない単語をメモします。
  2. まず0.75倍速で一文ずつシャドーイングし、慣れてきたら通常の速度に戻します。
  3. 自分の声を録音して元の音声と比べます。endorphin, magnify, morphineなどの単語に特に注意しましょう。

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。

シャドーイングのやり方: ステップ別の完全ガイドを読む →