Science & Technology

The surprising health benefits of dreaming | Sleeping with Science

Every night when you fall asleep and start dreaming, you’re actually doing very important work! According to sleep scientist Matt Walker, dreams act like a form of “overnight therapy.” In fact, your dreams may even boost your ability to solve problems and process tough emotions that affect your waking life. Sleep — we spend one-third…

Published

5 years ago

November 24, 2021

CYBER TECH TV

Sleep — we spend one-third of our lives doing it, but what exactly do we get out of it? And how can we do it better? In this TED series, sleep scientist Matt Walker uncovers the facts and secrets behind our nightly slumber. (Made possible with the support of Oura) Check out more episodes on TED.com:

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64 Comments

MARLEY & CAM tv ????

November 24, 2021 at 9:30 pm

I’ve healed emotions, negative thinking, lack of confidence and heartbreak through dreaming. I don’t usually cry in reality but I let my sobs out in my dreams! They help me navigate in the real world so many times ???? ???? ????

Reply
C.T 111

November 24, 2021 at 9:37 pm

Why is it when I have to go to the toilet whole I’m asleep I actually dream about going to the toilet and I can never find a private place, there’s always people around and I can’t go????

Reply
Rafael 47

November 24, 2021 at 9:43 pm

Nice quick video, fresh Ted!

Reply
Grey Gamut

November 24, 2021 at 9:46 pm

What about when you only have horrible traumatizing nightmares every time for years on end?…

Reply
Rictheanon ymouser

November 24, 2021 at 9:48 pm

Im an acute insomniac and i haven’t had a dream in years….
(i should note ive been described as emotionally detatched by many people)
when i do occasionally (every few years) i always wake up in a great mood.

i noticed the connection along time ago. great video.

Reply
No one star

November 24, 2021 at 9:52 pm

Even my book (and the characters in it) expresses how important dreams, rest, and sleep all are.

Personally, I’ve had sleep issues since I was around 10. Nothing helps.

*”Time is the only resource for which no creature may bargain.”*

????✨????✨????✨
“Before I start, I must see my end.
Destination known, my mind’s journey now begins.
Upon my chariot, heart & soul’s fate revealed.
In Time, all points converge–hope’s strength re-steeled.
But to earn final peace at the Universe’s endless refrain,
We must see all in nothingness…
…before we start again.”
????✨????✨????✨
— Diamond Dragons (book 1)

Reply
Enlightened_One ॐ

November 24, 2021 at 10:01 pm

I smoke too much weed to have dreams

Reply
Lighty

November 24, 2021 at 10:05 pm

god I love it when Im having a dream and suddenly wake up at say 8 am, then decide that I want to go back, put my head down again and literally continue seeing it again

Reply
Verena Satriani

November 24, 2021 at 10:08 pm

Sometimes I forget the dream I had right after I wake up.

Reply
- Letícia B.
  
  November 24, 2021 at 10:55 pm
  
  Me too, but one thing I do is think “how was my dream?” over and over again so the dream content come to me in details, it’s really fun actually! ????
  
  Reply
Ash G.

November 24, 2021 at 10:11 pm

I don’t dream. Probably haven’t remembered a dream since I was a teenager.

Reply
Mio

November 24, 2021 at 10:32 pm

I never know my dreams can actually solve my problems.
*All I know is that I don’t remember anything when I wake up.*

Reply
HEL POETRY

November 24, 2021 at 10:41 pm

wow, now I only have to find real life Fred Flintstone

Reply
Mr Max

November 24, 2021 at 10:42 pm

If you enjoy this, I highly recommend you watching Matthew Walker kb the Joe Rogan podcast. Very interesting

Reply
Rita Evergreen

November 24, 2021 at 11:04 pm

This would make sense why bodywork with trauma ends up having lot of dreams being created in order to finish the response and have closure.

Reply
- Loan Truong
  
  November 25, 2021 at 1:25 am
  
  Và….. những giấc mơ do nhóm người điều khiển từ xa có thể sai khiến người mơ thực hiện công việc của Họ ( với người mơ biết mình đang trong cuộc ), ( với người mơ không biết mình bị sử dụng: người bị mơ sẽ rơi vào tâm thần hoảng loạn ). Công nghệ điều khiển tâm trí có thể làm người hạnh phúc hay giải sầu, nhưng đại phần là xấu: nó có thể sai khiến người làm việc nguy hiểm hiến mạng và cái chết đó chỉ là kẻ vô danh.
  
  Reply
reasonably cubic bumblebee

November 24, 2021 at 11:07 pm

sources?

Reply
Your Mom

November 24, 2021 at 11:08 pm

Not my dreams. They make me angry and sad. It’s not therapeutic to wake up in a rage.

Reply
DigitalXrisXross

November 24, 2021 at 11:16 pm

i will tell this to my teachers after my class nap.

Reply
Caleb Henry

November 24, 2021 at 11:37 pm

I read this guy’s book on sleep. It’s pretty easily read and informative

Reply
????Motivation Bay Channel

November 24, 2021 at 11:48 pm

DO JUST ONCE what others say you can’t do and you’ll never pay attention to their limitations again

Reply
Nomthi Xulu

November 25, 2021 at 12:06 am

Interesting

Reply
hdmat101

November 25, 2021 at 12:10 am

Dream stans

Reply
vinnie moag

November 25, 2021 at 12:39 am

Everything he said was thrown out by his last sentence!!

Reply
FirstName LastName

November 25, 2021 at 12:39 am

I just experienced this “emotional first aid” recently. My cat had to be put to sleep and it hit me, hard. Harder than friends or grandparents that I’ve lost for some strange reason.
For about a week it was kind of like a stabbing pain in my chest, but it would be fine in the morning and then it would get worse as the day went on, and it was worst at night. Then it would be fine again the next morning.
It was pretty weird, like the pain would pop up when my brain was predicting I was going to have a sad thought, but sometimes it would get it wrong and give me the pain at the wrong times, like when I was opening the fridge, or thinking about doing the dishes or something. But I definitely noticed that the pain was almost non-existent in the mornings after some sleep.
I wonder if this is the same for people with depression, since it seems that most suicides happen at night..

Reply
- Rita Evergreen
  
  November 25, 2021 at 6:27 am
  
  I think what you’re expirencing is Grief and the pain in the chest mirrors that. Those are probably waves and you’re body hasn’t fully processed it because it was overwhelming
  
  Reply
Eli Nope

November 25, 2021 at 1:24 am

I wish I could control what I dreamed and make it resolve some of my issues.

Reply
Shakil Ahmed Nirob

November 25, 2021 at 1:41 am

Love from.Bangladesh

Reply
eric liu

November 25, 2021 at 2:01 am

Taking melatonin gives me some wild dreams. Good to know it’s a good thing.

Reply
Angela Starnes Harris

November 25, 2021 at 3:57 am

I take meds so I don’t dream or rather I don’t wake up when I’m dreaming, I have chronic PTSD

Reply
s diggly

November 25, 2021 at 4:09 am

Matt’s the best!

Reply
J

November 25, 2021 at 4:48 am

Sounds like psychedelics could work the same way…

Reply
Miklo

November 25, 2021 at 5:16 am

Dreams arent real. Is it like a movie where theres scenes?

Reply
Aks Human

November 25, 2021 at 5:29 am

From ancient times indian scriptures have defines dreams and their impact on dreamer.

Reply
Believe

November 25, 2021 at 5:53 am

this guy sells snake oil

Reply
returnofbhavar99

November 25, 2021 at 8:26 am

Who did the animation in this video? It’s beautiful.

Reply
Azimbek

November 25, 2021 at 10:40 am

Sometimes dreams comes very shameful ????‍♀️

Reply
Eagle Claw

November 25, 2021 at 11:31 am

In my dream, I Could Jump 5 Miters, But In Real I cant! how can My dream convert Into Real?? Tell me

Reply
Justin Spencer

November 25, 2021 at 11:36 am

Sleep is of utmost importance, I never knew how important sleep was to success, but now I do, so I make sure that I get an adequate amount daily. May these quotes inspire you to make sleep a priority in your life so that you may be in the best of health. I remembered sleeping all day back in 2020 in my day job, and that made me lost so much motivation because i was not making enough for my family, but i was never reliant to give up because my sleep turned to dreams when i met Dion Savenije, a Top analyst and Author, who showed me how to use the blockchain finance and cryptocurrency system, from a day job of $5 per hour, i rose my portfolio to $75,000 with his insight and motivation, i am highly grateful to myself not giving up and i know everyone can do this also.

Reply
- Nate Kent
  
  November 25, 2021 at 10:53 pm
  
  How do i get contact him please?
  
  Reply
Nobody

November 25, 2021 at 12:39 pm

It’s always a great day when there is a new episode of Sleeping with Science series. Thanks TED! You guys make my day

Reply
Vlad Kiperman

November 25, 2021 at 12:51 pm

The morning is wiser than the evening

Reply
michael gatobu

November 25, 2021 at 12:52 pm

When I dream , I don’t snore , when I don’t dream I snore ????

Reply
Horence

November 25, 2021 at 1:30 pm

It’s strange, when I didn’t knew what to do with my life I occasionally dreamed about a specific point in a time of day, that I would experience whether it was the day after the dream or months. Deja Vu, they called it. The moment I started writing, discovered that I loved it, and considered doing it for the rest of my life; those dreams stopped, and the occasional dreams start to become too convoluted to consider keeping into mind.

The feeling of detachment from subconsciously knowing: “Your life has been laid out for you”
–and the feeling of fulfillment from losing those dreams, affront newly gained sense of agency to “Want” for something,

Felt very liberating from that existential dread.
I don’t want to put all my cards into prospects of the subconscious that haven’t yet been fully explained, but I am optimistic that dreams can be a reflection of who you are, depending on how you make out of what you see.

Reply
Be a better You

November 25, 2021 at 1:32 pm

I dream every single day.. And i remember most part of it.. Somedays there are more than one dream.. Only issue is i wake up sometimes after a dream.

Reply
Nicole

November 25, 2021 at 2:07 pm

Taking a class on this next semester and now I’m extra excited

Reply
Marc-André Lacroix

November 25, 2021 at 6:15 pm

My REM sleep score always range under 15 % I cant seem to find anything that would help me to get more of that cycle…. does anybody has any tips or things I could try that has worked for them that had made a change in his/her REM sleep ?

Reply
Mala Fanai

November 25, 2021 at 8:24 pm

I’m glad i read his book “Why we sleep” A good read.

Reply
Nadia Haywood

November 25, 2021 at 9:41 pm

His voice and the background music is very soothing though…..nice video

Reply
Ana Isabel

November 25, 2021 at 11:02 pm

Ok so the recurring nightmares I have about zombies are a good thing then?

Reply
BLACK SWAN

November 26, 2021 at 2:21 am

Am i the only who doesn’t want to dream? I just want to sleep without any of these inner voices. Its been so long, since i had a peaceful sleep damn. I just hate dreaming.

Reply
Curious Nerdy

November 26, 2021 at 3:47 am

This video is a literal gem!
Love yaallll!!!

Reply
Chris

November 26, 2021 at 4:16 am

Every time I see him on Joe Rogan I think it’s a young Chuck Norris ????

Reply
Justin Spencer

November 26, 2021 at 12:12 pm

Sleep is of utmost importance, I never knew how important sleep was to success, but now I do, so I make sure that I get an adequate amount daily. May these quotes inspire you to make sleep a priority in your life so that you may be in the best of health. I remembered sleeping all day back in 2020 in my day job, and that made me lost so much motivation because i was not making enough for my family, but i was never reliant to give up because my sleep turned to dreams when i met Dion Savenije, a Top analyst and Author, who showed me how to use the blockchain finance and cryptocurrency system, from a day job of $5 per hour, i rose my portfolio to $75,000 with his insight and motivation, i am highly grateful to myself not giving up and i know everyone can do this also. His secured cntact is T????E????L????E????G????R????A????M???? DIONSAVENIJE

Reply
- Max Harvey
  
  November 26, 2021 at 12:26 pm
  
  The entire system and portfolio management tactics dion uses is very motivational, that is why his community and establishment are growing bigger daily, good yo be part of it
  
  Reply
sidewinder2057

November 26, 2021 at 10:16 pm

Love Matthew Walker, read his book a while ago “Why we sleep”, he also had one of the best podcasts with Joe Rogan.

Reply
Kongolox

November 27, 2021 at 3:43 am

this the health benefits of deep sleep.. not dreams.. u can have dreams in all stats of sleep but the big benefit only happens at the deep sleep status.

Reply
Donald Auguston

November 27, 2021 at 5:09 am

Is it possible to dictate what we are going to dream or does it happen by magic? Are there things we do that prevent us from dreaming, i.e., drugs, alcohol, etc.???

Reply
Michaela Skarbova

November 27, 2021 at 9:46 am

I dream every single night, sometimes several dreams a night and I remember all of them sometimes years after. Would love to see more scientific videos like this about dreaming ❤️

Reply
Bamboo

November 27, 2021 at 10:30 am

I dreamed that I could go to study abroad. Today, I trust that I can do it ✨✨✨

Reply
Chanel Guillory

November 27, 2021 at 2:43 pm

This is great. I’ve always felt like my dreams were somewhat giving me a better understanding of the issues I was struggling with in my daily life.

Reply
32 .xxAlsalem

November 28, 2021 at 7:45 pm

What is Him Name?

Reply
____

November 28, 2021 at 11:13 pm

Well my dreams were crushed years ago

Reply
BG GAMINGR YT

November 30, 2021 at 2:05 pm

Opi

Reply

Science & Technology

Learn What VCs Actually Want, From a Founder Who’s Raised $1B l Build Mode

Investors want founders who understand the financial reality of their business. Messy data, misunderstood metrics, or waiting until you’re nearly out of cash to start fundraising can cost founders leverage, valuation, and even a term sheet. In this episode of Build Mode, host Isabelle Johannesen sits down with Sasha Orloff, founder and CEO of Puzzle…

Published

21 hours ago

August 20, 2026

CYBER TECH TV

In this episode of Build Mode, host Isabelle Johannesen sits down with Sasha Orloff, founder and CEO of Puzzle and Startup Battlefield alum, to talk about what he’s learned from building companies that have raised more than $1 billion collectively.

Sasha breaks down what investors look for during fundraising, which financial metrics founders should know by heart, and why VCs don’t expect your startup to be perfect—they expect you to understand its reality. He also shares how he nearly lost a term sheet because his data room wasn’t ready, how fundraising diligence changes as a startup grows, and why getting your financial house in order can help founders raise with more confidence and leverage.

They get into:
– What raising more than $1 billion across multiple companies taught Sasha about fundraising
– Why investors value founders who have a strong grasp of their company’s financial reality
– The financial metrics founders should know before pitching VCs
How investor expectations change from pre-seed and seed through Series A, B, and beyond
– Why revenue growth and the quality of that revenue are critical fundraising metrics
– How runway, margins, sales efficiency, and profitability factor into investor decisions
– Why waiting until you’re running out of cash can hurt your fundraising leverage
– How Sasha nearly lost a term sheet because his data room wasn’t ready
– Why financial organization and compliance can influence investor confidence and startup valuations
– What founders should have prepared for the due diligence process
– Why VCs don’t expect perfection—and why being honest about what isn’t working can make for a stronger pitch
– How Sasha’s own fundraising and finance frustrations ultimately led him to build Puzzle
– How AI could change the way startups manage accounting and understand their financial health

Chapters:
00:00 – Why VCs Want Founders Who Understand Reality
01:26 – Sasha Orloff’s Journey to Building Puzzle
05:05 – Why Puzzle Started With Startup Founders
08:38 – What Founders Should Know Before Fundraising
11:08 – What Investors Look for During Due Diligence
14:37 – Understanding the Financial Health of Your Startup
17:52 – The Financial Mistakes Founders Make
20:19 – When Startups Need Accountants and Finance Teams
24:04 – How Sasha Almost Lost a Term Sheet
26:10 – The Financial Metrics Founders Should Know Cold
28:20 – Lessons From Raising $1B+ Across Multiple Companies
31:45 – Why Financial Readiness Matters to Investors
33:49 – How AI Is Changing Startup Accounting
37:17 – Inside Puzzle’s Series A With General Catalyst
38:52 – Launching Puzzle at Startup Battlefield
40:38 – Sasha’s Advice for Early-Stage Founders

Subscribe to Build Mode:
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New episodes of Build Mode drop every Thursday.

Science & Technology

How Satellites and AI Can Protect the Planet | Robbie Schingler | TED

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Space technologist Robbie Schingler cofounded a satellite company that images the whole planet every day, making visible changes on Earth. He shows how pairing that data with AI creates a “planetary intelligence” we can use to spot emerging threats we might not have seen otherwise. Now he asks: Can we close the gap between seeing a crisis coming and actually stopping it? (Followed by a note from TED guest curators Divya Siddarth and Audrey Tang) (Recorded at TED2026 on April 14, 2026)

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#TED #TEDTalks #Tech #ClimateChange

CNET

That Voicemail Isn’t Real, It’s AI. The New Wave of AI-Impersonation Scams

Scammers are using AI to impersonate high-profile targets, such as celebrities and politicians. Here’s how you can stay safe. You can find the products mentioned in this article linked below Commerce Link *CNET may get a commission on these offers Link to CNET article: Read more about X on CNET.com: Timecode Chapters: 00:00 The Threat…

Published

1 day ago

August 20, 2026

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Scammers are using AI to impersonate high-profile targets, such as celebrities and politicians. Here’s how you can stay safe.

You can find the products mentioned in this article linked below
Commerce Link
*CNET may get a commission on these offers

Link to CNET article: Read more about X on CNET.com:

Timecode Chapters:
00:00 The Threat of AI Impersonation
01:25 How Deepfakes Are Used in Politics
04:07 The Rise of Hyper-Personalized Fraud
05:42 Testing a Voice Clone on My Boss
07:11 Audio Blind Taste Test With My Sister
11:10 How to Stay Vigilant Against AI Clones

Video Credits:
Host: Katelyn Chedraoui
Scripted by:Katelyn Chedraoui
Producer: Numi Prasarn
Camera: Carly Marsh
Video Editor: Jon Gomez
Thumbnail Designer: Zooey Liao

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