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Why Daylight Is the Secret to Great Sleep | Christine Blume | TED

Does the type and amount of light you’re exposed to during the day change how well you sleep at night? Diving into the effects of daylight on your internal biological clock, sleep scientist Christine Blume shares practical tips for making natural light part of your daily routine — and shows why stepping outside might be…

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Does the type and amount of light you’re exposed to during the day change how well you sleep at night? Diving into the effects of daylight on your internal biological clock, sleep scientist Christine Blume shares practical tips for making natural light part of your daily routine — and shows why stepping outside might be the simplest, most impactful change you can make to get better rest. (Recorded at TEDxBasel on May 7, 2022)

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43 Comments

43 Comments

  1. @Mia-b3s3y

    February 17, 2025 at 7:11 am

    Your videos always amaze me with their professionalism and depth of treatment of the topic. Thank you for your dedication and passion for creativity!🤓🚚🏋️

  2. @Eva-v3k8r

    February 17, 2025 at 7:11 am

    Your videos are always so vivid and memorable! Thank you for your creativity and your ability to capture the attention of your viewers!🔷🌼🏙

    • @shreecapitalmarket

      February 17, 2025 at 7:16 am

      really…?

  3. @Baxtexx

    February 17, 2025 at 7:12 am

    Rip nordics, barley any sun in 4 months.

  4. @drumbum3.142

    February 17, 2025 at 7:29 am

    My preference of sleep is in the (relatively) dark. I used to detest naps but now they are my friend(s). I also enjoy shut-eye in (absolute) silence/quiet or sometimes at other times with (“quiet”) noise, talking, music in the background.. .

    • @phamtungskqqu

      February 17, 2025 at 9:06 am

      where can I buy it sirr???

    • @EdwinQuangÂu

      February 17, 2025 at 9:06 am

      I’ve been reading about this book on youtube for weeks, bought it last night. Honestly it’s better than 99% of books I’ve read so far.

    • @daobinh2mbia

      February 17, 2025 at 9:06 am

      my fiancee sent it to me in January, all i’m going to say is that it changed my life

    • @NguyễnNgọcPhươngVũ

      February 17, 2025 at 9:06 am

      please send me the link

    • @BìnhHoàiRonald

      February 17, 2025 at 9:06 am

      Bro idk who is Alex Lane but I want to meet him, 10 days after reading the book I found my first girlfriend wtf

  5. @ainunnovi6292

    February 17, 2025 at 7:31 am

    It really means a lot to me… Bcz i have the same study case

  6. @구현조-f6e

    February 17, 2025 at 7:39 am

    😮😅😂

  7. @up-n-at-em

    February 17, 2025 at 7:39 am

    Sleep being necessary to human biology creates its own darkness as we transition into a semiconscious state of being that’s independent of the Earth’s rotation on its axis.

  8. @lilwhodyson

    February 17, 2025 at 7:42 am

    what in the Ms. Frizzle magic school bus is this

  9. @Shivdatt0

    February 17, 2025 at 7:45 am

    at first, i was skeptical when i saw this book popping up everywhere. but vibrations of manifestation by alex lane explained manifesting in a way that made immediate sense. i applied one simple idea and began noticing changes almost instantly. do yourself a favor and google it—this could be your missing piece.

  10. @chadikumar4922

    February 17, 2025 at 7:45 am

    everything changed for me after i found vibrations of manifestation by alex lane online. i always thought i had manifestation figured out until this book revealed what was holding me back. one small adjustment, and my reality started shifting fast. check it out on google and see what i mean.

  11. @Hadri_ART

    February 17, 2025 at 8:11 am

    Me studying astrophysics for master exams inside a room 10hrs a day….💀💀💀💀

  12. @陳鈞鼎

    February 17, 2025 at 8:22 am

    😂

  13. @SusanSitu-b8t

    February 17, 2025 at 8:25 am

    不能

  14. @christopherstanford5599

    February 17, 2025 at 8:44 am

    I bought a very bright lamp for growing plants which uses a remote control. I turned it up toward ceiling and found that it filled my home office with a very warm light, especially lacking these cloudy winter months through the one north facing window. The lamp simulates the sun and anecdotally I can say that I felt an improvement in my sleep 🤗🤗 The lamp simulates the light spectrum necessary for growing plants indoors, maybe a study of artificial sunlight equivalents could be sponsored by one of these companies. Just purchased an additional lamp for my bedroom, use it on early cloudy mornings, feels like sunlight, wakes me up. These lamps have a bluetooth remote with brightness adjustments & timer, less than $100 for a tripod unit.🤗🤗

  15. @bubblesmageefrompoughkipse7104

    February 17, 2025 at 9:05 am

    I sleep much better during the day. I’m a night owl always have been.

    • @বুদ্ধিবৃক্ষএকাডেমি-ঝ৫প

      February 17, 2025 at 10:08 pm

      Are you facing any health problem?

    • @Guidje

      February 18, 2025 at 12:11 am

      yeah, me too – and i struggle very much with the “commercial hour”

  16. @Theoriginalanimalcracker

    February 17, 2025 at 9:17 am

    How to say your lazy on a Ted talk

  17. @marcvolpe8252

    February 17, 2025 at 9:39 am

    CHRISTINE,THE SUN IS SHINING AND SO ARE YOU

  18. @BoothContractor

    February 17, 2025 at 9:56 am

    謝謝。

  19. @DominionAnako-bb7ry

    February 17, 2025 at 11:43 am

    Sleep at least 8 hours

  20. @Pro-kesh

    February 17, 2025 at 1:16 pm

    This is why standard time is so much better than daylight savings time. You can actually wake up to sunlight

  21. @alvinksl8405

    February 17, 2025 at 1:33 pm

    Daylight is important. But as science progresses, we will one day find what she claimed above is not what actually happened, as with all other findings in science in our past by scientists. Science is the wrong tool to understand the infinity around us because it is trying to make all matters conform to it. Science itself is not at fault here; it is when we make it the rule and basis of all matters so we can control and gain something out from it, that is the mistake.

    • @kpNov23

      February 18, 2025 at 5:20 am

      Bonkers

  22. @arsenal0095

    February 17, 2025 at 1:40 pm

    Night shift work sunlight allowance is needed then!

  23. @muhammadibrahimabdullahi3840

    February 17, 2025 at 4:31 pm

    What I understand is that it gives more time for sleeping during the night, so you don’t spend time or wasted do what is the best.

  24. @BlessingWigwe

    February 17, 2025 at 7:07 pm

    British speak with muscle

  25. @KateHennes

    February 18, 2025 at 12:30 am

    I am at the beginning of my “investment journey”, planning to put 385K into dividend stocks so that I will be making up to 30% annually in dividend returns. any good stock recommendation on great performing stocks or Crypto will be appreciated….

    • @Natashagroupies

      February 18, 2025 at 12:31 am

      Absolutely! I am at $4.25 mil. Biggest positions PLTR, TSLA, SCHD, NVDA,BTC and now looking to build up DRGO alongside finding quality value/growth stocks to buy like TORM. I got $48k divs last year in taxable divs. Q2 taxable divs this year was $17,388 this year. Don’t sell when the market is down. Having a skilled Financial counsellor that puts the time in to do in-depth research can be valuable in strategizing your portfolio..

    • @KateHennes

      February 18, 2025 at 12:31 am

      how would you recommend i enter the crypto market? I am also looking at studying some traders and copying their strategy rather than investing myself and losing money emotionally. What’s your take on this approach? and How can i reach her, if you don’t mind me asking??

  26. @mollydooker9636

    February 18, 2025 at 1:03 am

    Yea yea yea. Im also an expert on sleep, or rather the lack of it. As a lifelong chronic insomniac. I also enjoying hiking and spending 12 hours a day marchi g up mountains. Still cant sleep without medication.

  27. @haigha-qb4kf

    February 18, 2025 at 5:14 am

    Re-aired? I bet I already saw that at a TED channel?

  28. @Sara-qq6vl

    February 18, 2025 at 6:28 am

    Amazing! it’s a while since I’ve been suffering from disordered sleeping, and it’s exactly coincident with confining myself in a flat to concentrate more on my tasks, without communicating and strolling under the sun. I think I should change my routine…

  29. @sinnguyen39

    February 18, 2025 at 10:46 am

    let me see your hand if everyday u in here to practice your English. <3

  30. @سیروس.مریدی

    February 18, 2025 at 2:25 pm

    رابطه مستقیم خواب .با ذهن آرام ..ذهن آشفته

  31. @tazf4756

    February 19, 2025 at 9:19 pm

    None of this is at all new.

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Science & Technology

Startup Battlefield: Health Tech & Life Sciences Pitches | Disrupt 2026

Founders from around the world pitch expert judges and compete for the Startup Battlefield Cup and $100,000. Each team gets six minutes to pitch and six minutes of Q&A with judges Dr. V. Agrawal (ODDBIRD VC), Andrew Brackin (Gradient), Nell Daly (Revenge Capital), James Joaquin (Obvious Ventures), and Miloni Madan Presler (IVP). This cohort’s competitors…

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Founders from around the world pitch expert judges and compete for the Startup Battlefield Cup and $100,000. Each team gets six minutes to pitch and six minutes of Q&A with judges Dr. V. Agrawal (ODDBIRD VC), Andrew Brackin (Gradient), Nell Daly (Revenge Capital), James Joaquin (Obvious Ventures), and Miloni Madan Presler (IVP).

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#TechCrunchDisrupt2026

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Flock CEO Garrett Langley on Public Backlash, Surveillance Expansion | Disrupt 2026

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As a sign of that backlash, as Langley spoke on stage, a protest against Flock was taking place outside of Moscone West in San Francisco.

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Satya Nadella’s ‘emergency brake’ and the race to secure AI agents | Disrupt 2026

TechCrunch’s Equity podcast team took over the Builders Stage Tuesday morning to tackle a growing challenge for the AI industry: What happens when AI agents go off-script, and who’s responsible for keeping them in check? Recent incidents, from Anthropic pulling internal evaluations off the live internet after agents misbehaved to Microsoft CEO Satya Nadella calling…

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#TechCrunchDisrupt2026

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