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9 Views · 19 days ago

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It’s 4am, and the big test is in 8 hours. You’ve been studying for days, but you still don’t feel ready. Should you drink another cup of coffee and spend the next few hours cramming? Or should you go to sleep? Shai Marcu defends the latter option, showing how sleep restructures your brain in a way that’s crucial for how our memory works.

Lesson by Shai Marcu, animation by Javier Saldeña.

8 Views · 20 days ago

Dig into the science of stretching, and find out what it actually does to your muscles and how you can improve your flexibility.


An athlete is preparing for a game. They’ve put on their gear and done their warmup, and now it’s time for one more routine — stretching. Typically, athletes stretch before physical activity to avoid injuries like strains and tears. But does stretching actually prevent these issues? And if so, how long do the benefits of stretching last? Malachy McHugh explores the finer points of flexibility.

Lesson by Malachy McHugh, directed by Sofia Pashaei.

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Thank you so much to our patrons for your support! Without you this video would not be possible! Cyrus Garay, Samuel Barbas, LadyGeek, Marin Kovachev, Penelope Misquitta, Hans Peng, Gaurav Mathur, Erik Biemans, Tony, Michelle, Katie and Josh Pedretti, Hoai Nam Tran, Kack-Kyun Kim, Michael Braun-Boghos, zjweele13, Anna-Pitschna Kunz, Edla Paniguel, Thomas Mungavan, Jaron Blackburn, Venkat Venkatakrishnan, ReuniteKorea, Aaron Henson, Rohan Gupta, Begum Tutuncu, Brian Richards, Jørgen Østerpart, Tyron Jung, Carsten Tobehn, Katie Dean, Ezgi Yersu, Gerald Onyango, alessandra tasso, Doreen Reynolds-Consolati, Manognya Chakrapani, Ayala Ron, Eunsun Kim, Phyllis Dubrow, Ophelia Gibson Best, Paul Schneider, Joichiro Yamada, Henrique Cassús, Karthik Cherala, Clarence E. Harper Jr., Vignan Velivela, Ana Maria, Exal Enrique Cisneros Tuch, Tejas Dc, Khalifa Alhulail, Martin Stephen, Jose Henrique Leopoldo e Silva, Mandeep Singh and Abhijit Kiran Valluri.

15 Views · 26 days ago

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Vitamins are the building blocks that keep our bodies running; they help build muscle and bone, capture energy, heal wounds and more. But if our body doesn’t create vitamins, how do they get into our system? Ginnie Trinh Nguyen describes what vitamins are, how they get into our bodies -- and why they are so crucial.

Lesson by Ginnie Trinh Nguyen, animation by The Moving Company Animation Studio.

8 Views · 26 days ago

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Over 100,000 metric tons of caffeine are consumed around the world every year. That’s equivalent to the weight of 14 Eiffel Towers! Caffeine helps us feel alert, focused, and energetic, even if we haven’t had enough sleep — but it can also raise our blood pressure and make us feel anxious. So how does it keep us awake? Hanan Qasim shares the science behind the world’s most widely used drug.

Lesson by Hanan Qasim, directed by Adriatic Animation.

12 Views · 26 days ago

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When you eat something loaded with sugar, your taste buds, your gut and your brain all take notice. This activation of your reward system is not unlike how bodies process addictive substances such as alcohol or nicotine -- an overload of sugar spikes dopamine levels and leaves you craving more. Nicole Avena explains why sweets and treats should be enjoyed in moderation.

Lesson by Nicole Avena, animation by STK Films.

10 Views · 26 days ago

When it comes to what you bite, chew and swallow, your choices have a direct and long-lasting effect on the most powerful organ in your body: your brain. So which foods cause you to feel so tired after lunch? Or so restless at night? Mia Nacamulli takes you into the brain to find out. Lesson by Mia Nacamulli, animation by Private Island.

10 Views · 1 month ago

Scientists like Prof Sinclair have evidence of speeding up, slowing, and even reversing aging.
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What causes aging? According to Professor David Sinclair, it is a loss of information in our epigenome, the system of proteins like histones and chemical markers like methylation that turn on and off genes. Epigenetics allow different cell types to perform their specific functions - they are what differentiate a brain cell from a skin cell. Our DNA is constantly getting broken, by cosmic rays, UV radiation, free radicals, x-rays and regular cell division etc. When our cells repair that damage, the epigenome is not perfectly reset. And hence over time, noise accumulates in our epigenome. Our cells no longer perform their functions well.

To counter this decline, we can activate the body's own defenses against aging by stressing the body. Eat less, eat less protein, engage in intense exercise, experience uncomfortable cold. When the body senses existential threats it triggers longevity genes, which attempt to maintain the body to ensure its survival until good times return. This may be the evolutionary legacy of early bacteria, which established these two modes of living (repair and protect vs grow and reproduce). Scientists are uncovering ways to mimic stresses on the body without the discomfort of fasting. Molecules like NMN also trigger sirtuins to monitor and repair the epigenome. This may slow aging.

Reversing aging requires an epigenetic reset, which may be possible using Yamanaka factors. These four factors can revert an adult cell into a pluripotent stem cell. Prof. Sinclair used three of the four factors to reverse aging in the retinal cells of old mice. He found they could see again after the treatment.

Special thanks to:
Professor David Sinclair, check out his book "Lifespan: Why We Age & Why We Don't Have To"
Assistant Professor David Gold
Noemie Sierra (for polyp images)
Genepool Productions for telomere animations from Immortal:
Epigenetics animations (DNA, histones, methylation etc) courtesy of:
Animation: Etsuko Uno
Art and Technical Direction: Drew Berry
Sound Design: Francois Tetaz & Emma Bortignon
Scientific Consultation: Marnie Blewitt
Courtesy of Walter and Eliza Hall Institute of Medical Research

Filming, editing and animation by Jonny Hyman and Derek Muller

Music from "Clearer Views" "Innovations" "A Sound Foundation" "Seaweed"
Additional music by Kevin MacLeod from "Marty Gots a Plan"

10 Views · 2 months ago

Are Vitamins and Supplements a Scam?
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The supplements industry — with all its vitamins, weight loss pills, workout powders, and hormones — has been growing exponentially over the last couple of decades despite there being no increased regulations for them. We wanted to know — are supplements dangerous to take, and are they even effective?

Thank you to the experts we spoke with that helped with our research in this story:
Dr. C. Michael White, Pharm.D., FCP, FCCP
Dr. F. Perry Wilson, MD, MSCE
Dr. Edzard Ernst, MD, PhD, MAE, FMedSci, FRSB, FRCP

And thank you to Ryan Howkins, the founder of the Lion’s Mane Recovery subreddit, who brought the Lion’s Mane story to our team. You can find the subreddit here:

Resources to look up supplements and vitamins:
US Pharmacopeia:

My next video is live on Nebula NOW! It's about how the world economy is changing. Watch now:

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0:00 Intro
3:57 How the Supplement Industry Works
12:25 What the Science Says
17:34 Supplements Gone Bad
25:19 What Can Be Done
28:28 Announcements & Outro

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The music for this video, created by our in house composer Tom Fox, is available on our music channel, The Music Room! Follow the link to hear this soundtrack and many more:

Johnny Harris is an Emmy-winning independent journalist and contributor to the New York Times. Based in Washington, DC, Harris reports on interesting trends and stories domestically and around the globe, publishing to his audience of over 3.5 million on Youtube. Harris produced and hosted the twice Emmy-nominated series Borders for Vox Media. His visual style blends motion graphics with cinematic videography to create content that explains complex issues in relatable ways.

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16 Views · 2 months ago

Hate to break it to you, but your truffle oil wasn't made from truffles. Your vanilla extract? Well, that's probably just a lab-made derivative of crude oil. And your shaker of Parmesan cheese? It probably has wood pulp inside.

You might feel the companies behind these food products are using deceptive packaging — but it's legal. However, there's a whole other level of trickery that's completely illegal: food fraud. That's when criminals bottle up corn syrup and call it 100% honey, or when they pass off cheap mozzarella as pure Parmigiano-Reggiano.

Globally, the fraudulent food industry could be worth $40 billion. It hurts legitimate producers, funds criminal activities, and can even harm consumers. We head around the world to uncover how producers get away with food deception and how we can spot the real stuff.

0:00 Intro
1:08 Truffles
3:44 Maple Syrup
5:19 Wasabi
7:42 Parmesan Cheese
11:15 Vanilla
12:58 Caviar
14:40 Honey
17:30 Olive Oil
20:04 Wagyu Beef
22:20 Coffee
24:05 Saffron
25:58 How criminals get away with selling fakes

How A Louisiana Crawfish Company Harvests 60,000 pounds A Day | Big Business | Insider Business
Inside the US Factory Making Ukraine’s Most Important Ammo | Big Business | Insider Business
Why Coconut Farmers Risk Their Lives To Feed The World's Superfood Obsession | Big Business

#food #bigbusiness #insiderbusiness

Business Insider tells you all you need to know about business, finance, tech, retail, and more.

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11 Of The Most Faked Foods In The World | Big Business | Insider Business

15 Views · 2 months ago

In this 3D animation, we explore the fascinating world of the digestive system. From the moment food enters our mouths to its transformation into vital nutrients, the video breaks down each stage with stunning visuals and clear explanations.

0:00 Mouth
0:06 Esophagus
0:26 Stomach
1:26 Carbs vs. Proteins vs. Fats
1:42 Small Intestine
2:13 Large Intestine
3:03 Odor of Stool
3:25 Rectum
3:36 Next video

How the Digestive System Works | 3D Animation
Images/videos used under license from

7 Views · 2 months ago

Be sure to check out the sponsor of today's video LetsGetChecked and use the coupon code IOHA25 to get 25% off your test!

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➡️ What Gonorrhea Does to Your Body:
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What HIV Does to the Body

In this video, Jonathan from the Institute of Human Anatomy will guide us through the essential aspects of HIV awareness and prevention. You will learn about HIV transmission, treatment, testing guidelines, and practical risk-reduction strategies. Join us for a comprehensive discussion on HIV education.


0:00 - 0:46 Intro
0:47 - 1:11 What is HIV?
1:12 - 1:32 How is HIV Transmitted?
1:33 - 1:43 HIV Cannot be Spread Through Casual Contact
1:44 - 3:59 What Are the Odds of Catching HIV With the Different Types of Intercourse?
4:00 - 4:29 The Risk of Getting HIV from Non-Sexual Blood-borne Exposure
4:30 - 5:19 Factors That Further Increase the Odds of Contracting HIV
5:20 - 7:36 Is It Really Worth the Risk?
7:37 - 8:44 What Happens When Someone First Gets Infected With HIV?
8:45 - 9:44 What Does HIV Do to Your Immune System?
9:45 - 10:48 Chronic HIV: When Does it Become AIDs (Acquired Immunodeficiency Syndrome)?
10:49 - 11:19 Current HIV Treatment: Slowing Disease Progression & Living a Normal Life
11:20 - 11:39 Undetectable Viral Load: No Risk of Transmitting the Infection?
11:40 - 12:30 PrEP: Pre-Exposure Prophylaxis: How it is Used Prior to Exposure
12:31 - 12:59 PEP: Post-Exposure Prophylaxis: 72 Hours After a High-Risk Exposure
13:00 - 14:36 Who Should Consider Getting Tested For HIV?
14:37 - 15:12 How Long Do You have to Wait to be Tested After a Potential Exposure?
15:13 - 16:11 Practices That Can Help One Lower the Risks of Contracting HIV

Cool Stuff!


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License code: QVKIQ35ZYDRYSU4R

#hivawareness #hiv #sexualhealth #instituteofhumananatomy

4,560 Views · 2 months ago

Dive into the subconscious to see what’s really driving the decisions you make.
Official Website: | #novapbs are you in control, or is your brain controlling you? Dive into the latest research on the subconscious with neuroscientist Heather Berlin. Sleepwalking, anesthesia, game theory, and more reveal surprising insights in this eye-opening journey to discover what’s really driving the decisions you make.

00:00 Introduction
03:22 Sleepwalking and the Brain
08:36 Anesthesia and the Brain
14:18 Results of Split Brain Surgery
22:23 Emotions and the Brain
30:01 How Does Trauma Affect the Brain?
35:39 How Much Control Do We Have of Our Brain?
45:44 Creativity and the Brain
50:17 Conclusion

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#brainscience #perception #neuroscience #consciousness #subconscious #subconsciousmind