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    B1
    #sleep#bed#circadian#rem sleep#wake#melatonin

    How to sleep better? One amazing tip you can try right now.

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    林宜悉 posted on 2025/12/13
    Struggling to get a good night's sleep? This video reveals one simple, science-backed tip from Harvard researchers that you can try tonight to improve your sleep hygiene and boost your natural melatonin production. You'll also pick up some advanced vocabulary related to circadian rhythms and the effects of blue light!

    Video vocabulary

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    crucial

    US /ˈkruʃəl/

    ・

    UK /'kru:ʃl/

    • Adjective
    • Extremely important or necessary
    • Of great importance to the success of something.
    B1
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    rhythm

    US /ˈrɪðəm/

    ・

    UK /ˈrɪðəm/

    • Noun (Countable/Uncountable)
    • Pattern of events, motions, or changes
    • A pattern of sound and beats in music
    A2
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    metabolism

    US /mɪˈtæbəˌlɪzəm/

    ・

    UK /məˈtæbəlɪzəm/

    • Uncountable Noun
    • Chemical processes to convert food to energy
    • The rate at which the body uses energy.
    B2
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    properly

    US /ˈprɑːpərli/

    ・

    UK /ˈprɔpəlɪ/

    • Adverb
    • In an appropriate or correct manner
    • In a way that is suitable or appropriate.
    A2
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    energy point vocabulary

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