Neuroscientists swear by this mind hack that makes learning anything faster and easier

“The 2-3-5-7 method works with your brain to overcome the forgetting curve.”

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Mark Wales

Oct 23, 2025

By Mark Wales

October 23, 2025

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Photo credit: Image via Canva (ianmcdonnell) – Practicing playing guitar.

When it comes to memorization, repeating something over and over again has been the basic tactic most of us have used since starting elementary school. It’s long, tedious, often ineffective, and sometimes feels just plain exhausting. But there’s good news: the 2357 method is here to help. Yes, this involves repeated visits to subject matter—there’s no escaping that part, but it integrates subtle changes that really help. These are the basic steps:

What is the 2-3-5-7 method?

Day 1: Revise your initial notes — This might be the biggest hurdle, because nobody, after just learning something, wants to dive right in. Going back over what you just learned and refreshing and cleaning up the notes goes a long way. A 2025 study in the Oxford Academic found rewriting your notes helped with recall, especially for learning details.
Day 2: Revise and review them — A 2024 review by Brown University released by the Department of Educational Services found that revisiting and restructuring notes after initial exposure was a strong practice for memory, retention, and productivity.
Day 3: Revise and review again — It’s the same principle behind Day 2. You can take a slightly different approach this time by focusing on other details or subjects you’re not grasping as well. Try to find new ways that things connect and fit together.
Day 5: Revise and review again — The good news about Day 5 is that you get to take a break with no Day 4. Taking breaks between study sessions is crucial for combating the “forgetting curve.” A 2022 study in the National Library of Medicine discovered that forgetting happens at different time intervals (short, intermediate, and long). Expanding the memorization structure helps tackle each hurdle.
Day 7: Revise and review again — The importance on Day 7 is to review more than revise. A great technique suggested by Ellefson is ‘blurting.’ It involves writing down everything you know about the subject, then checking your notes to find what you missed.

lightbulb, maximize retention, memorization techniques, sessions, studying, retrieval practice, active rewriting, results — Creative concept of human brain in light bulb. Image via Canva (berkay08)

Why does it work?

It works because it effectively combines elements of proven memorization techniques. Increasing the time between sessions helps combat the forgetting curve. Spacing out helps information move from short-term to long-term memory. Actively engaging your notes maximizes retention. A 2023 study in Frontiers found that combining restudy (revisiting material) and retrieval practice (actively rewriting and reviewing) yields much better results.

brain power, practical applications, new skill, healthy habits, life lessons, revisiting information, neuroplasticity, cognitive load — Plug in your brain. Image via Canva (9dreamstudio)

Other practical applications for using this method

Putting this memorization method into action has more value than just studying for school and work. Here are some great ways to quickly learn within some practical applications:

Learning a new skill — You’re never going to be able to learn to play guitar or speak a new language by cramming in a few lessons over the weekend. Gaining the skills of cooking, drawing, and learning a foreign language requires some practice. The 2-3-5-7 method turns a casual interest into actual capability.
- Day 1 — You’re introduced to a new skill. Expect your curiosity to be stronger than your retention level.
- Day 2 —Try it again and see if there’s anything you can refine and do better. It’s perfectly normal to be messy and have a low retention level.
- Day 3 — Your first neural pathways are forming. What’s sticking and what isn’t? A 2024 study in the Cornell Chronicle found that after 48 hours, important neural reactivation and reset mechanisms are active.
- Day 5 — Allow yourself a break before getting back to it to overcome the “forgetting curve.”
- Day 7 — Another session to lock in long-term memory and see what you’ve learned. Review your progress, correct the errors you can, and decide whether to continue, quit, or evolve the practice.

Building healthy habits — Using the method on healthy habits is not learning to focus on willpower. Building habits around your body, mind, relationships, or even finances requires intentionality through spaced repetition. This is creating a framework for real change:
- Day 1 — Try out the wanted habit and capture how it feels.
- Day 2 — Do it again, even when you don’t want to. Was it easier or harder to do? Why?
- Day 3 — This day might be the biggest hurdle, so try and find a fresh way to approach it. With something like meditation, for example, try a different style. If you started with a mantra-based meditation, move to a guided meditation, or perhaps listen to a music meditation.
- Day 5 — It’s always good to take a break and allow the mind an opportunity to reset before passing the “forgetting curve.” We’re looking to add a few percent of improvement. Small growth encourages identity shifts. A 2025 study in Springer Nature Link found that small, successful learning experiences increased self-efficacy and self-belief.
- Day 7 — Reflect and then recommit. Is this a good habit for you? Should you stick to it or try something new?

Life lessons — So you made a mistake that you don’t want to repeat. Don’t just move on; process what happened deliberately, repeatedly, and with structure.
- Day 1 — What happened? What triggered it? What do you wish you could have done differently?
- Day 2 — Revisit the event. What emotions came up? Are you seeing what happened with a new perspective?
- Day 3 — Apply your insights to something small, like a journal entry, or have a conversation with a trusted friend.
- Day 5 — Application helps move the insight from a mental note into a behavioral change. A 2025 study at Cornell University found that strong habits formed through repetition could trigger automatic observable behavior. Decide to do things differently.
- Day 7 — You’ve had some time, so reassess. Have you avoided the same mistake? Are you living this life lesson yet, or repeating the same behavior? Weekly check-ins will anchor the experience into your long-term memory.

spaced repetition, habit changes, skill stacking, deliberate practice, micro habits, psychology, human nature — Brain storm mermorization. Image via Canva (Peshkova)

Unless you have a photographic memory, it’s going to take some repetition to learn something new. Having a specific regimen and routine to follow can make the process simpler and more efficient. Practices like the 2-3-5-7 method use science and biology to help you achieve maximum results. There’s no escaping a process of review and repeat, but the creative nuance and benefits of this type of self-improvement are worth it.

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Photo credit: Canva – A man with fast reflexes.

Culture, Internet

Italian man claims to be ‘human cheetah’ with lightning-fast reflexes

“I blinked and I missed it”

Mark Wales

4/29/2026

At first glance, this probably looks like a camera trick. Ken Lee, an Italian content creator, has built a massive online following by doing something that doesn’t quite feel real. Viewers refer to him as the “human cheetah” because it appears he has near-instant reflexes.

Grabbing objects out of the air with uncanny precision, flicking clothespins and lighters, and throwing a blur of punches and kicks at impossible speeds, it is easy to call him unbelievable. Half the audience thinks his viral speed videos are fake. The other half is just as convinced they are watching something incredibly rare.

@kenleefastestman
KAIOKEN DELL’UNIVERSO!🐉😱 PER VOI DIVENTO LUCE!!!💥(Super Saiyan 11° livello!💫) #kenlee🐉 #kenshirorealstar💥 #kaioken #universe #animeman #live #supersaiyan #ultrainstinct #maivisto #manga #dragonball #fastest #saitama #brucelee #goku #funny #divertente #comic
♬ suono originale – Ken Lee👽⚡

Hands so fast they blur time

In the video above, a timer runs to confirm its authenticity. In what looks like half a second, he reaches out and snags the lighter from the table. To prove it is real, he does it twice.

Having amassed millions of followers on his TikTok page, the identity behind the mysterious influencer remains largely unknown. Active since around 2022, with almost 100 million accumulated likes, Lee has cultivated a fandom around his self-proclaimed “Superhero per Hobby!”

Do you believe it is real? Is this person the fastest human alive? Many followers cannot wait for the next video to be posted. Plenty of his fervent fans are Italian, so sifting through the remarks takes a bit of hunting. Here are some comments that sum up how much people enjoy the fun and the spectacle:

“Ken lee the fastest and the best”

“Most dangerous human”

“Is this what the lighter sees before my homie steals it”

“It was sped up during he grabbed the lighter, if u count up with the timer u would be off by like 0,5 seconds whenever he grabs the lighter.”

“If the flash were human”

“How is it possible to get such powers ?”

“I blinked and I missed it”

@kenleefastestman
AIR OF THE DRAGON! 🐉😱 #kenlee🐉 #kenshirorealstar💥 #animeman #over100000 #ultrainstinct #over100000 #saitama #goku #brucelee #speedoflight⚡ #manga #cartoon #fastest #flash #velocita #sport #impossible #lighters #world #record #real #speed
♬ suono originale – Ken Lee👽⚡

People love good entertainment

The awe of peak performance attracts people to watch elite athletes, musicians, or even dancers. There is something that deeply satisfies all of us when a human appears to push a skill to its limit. Whether it is real or fake seems to matter less than the opportunity to chime in on some good entertainment.

How far could any of us go by practicing and repeating a particular motion over and over until it is mastered? Beneath the flashy nickname and his viral speed videos, Lee’s content has a way of drawing people in. This is not a superpower. Just repetition. Focus. Obsession. And maybe some digital wizardry.

@kenleefastestman
KEN LEE💫THE NEW SUPERHERO! 👽⚡️🌎🐉#kenleespeed👽⚡ #fastestmanalive⚡️ #speedoflight #worldspeed🌎 #superhero
♬ audio originale – Ken Lee👽⚡

Testing the science of speed

If you wish to question the validity of Lee’s performances, maybe some basic science can help. Human reaction time is not just a reflex. A 2024 study found that the nervous system can fine-tune responses in real time. Practice can make movements appear almost automatic.

It has been well established in research that the gap between seeing something and responding has a limit. A 2025 study concluded that the most elite extremes allow for reaction times of 100 milliseconds. At that speed, the human brain can barely process that something has happened.

Science explains Lee is not necessarily moving as fast as we might perceive him to be. And therein lies all the fun of it. We cannot prove it is real, nor can we actually prove that it is fake.

Maybe Lee is the “fastest man alive” or the so-called “human cheetah.” Or maybe he is just a remarkable entertainer. Either way, he has clearly tapped into something strange and fascinating: a blend of human ability and fantasy that people do not want to miss.

To give context to Lee’s videos, watch this performance on Tú Sí Que Vales:

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Photo credit: LisaStrachan/iStock via Getty Images – Fear not: There isn’t anything that needs saving.

Culture, Media

Despite all the likes, literallys and dropped g’s, English isn’t decaying before our eyes

Why “bad” English is nothing new.

Good Partner

4/22/2026

Valerie M. Fridland

As a linguistics professor, I’m often asked why English is decaying before our eyes, whether it’s “like” being used promiscuously, t’s being dropped deleteriously or “literally” being deployed nonliterally.

While these common gripes point to eccentric speech patterns, they don’t point to grammatical annihilation. English has weathered far worse.

Let’s start with something we can all agree on: Old English, spoken from approximately A.D. 450 to 1100, is pretty unintelligible to us today. Anyone who’s had the pleasure of reading “Beowulf” in high school knows how different English back then used to sound. Word endings did a lot more grammatical work, and verbs followed more complicated patterns. Remnants of those rules fuel lingering debates today, such as when to use “whom” over “who,” and whether the past tense of “sneak” is “snuck” or “sneaked.”

The language went on to experience centuries of tumult: Viking invasions, which introduced Old Norse influence; Anglo-Norman French rule, which shifted the language of the elite to French; and 18th-Century grammarians, who dictated norms with their elocution and grammar guides.

In that time, English has lost almost all of the more complex linguistic trappings it was born with to become the language we know and – at least, sometimes – love today. And as I explain in my new book, “Why We Talk Funny: The Real Story Behind Our Accents,” it was all thanks to the way that language naturally evolves to meet the social needs of its speakers.

From dropping the ‘l’ to dropping the ‘g’

The things we tend to label as “bad” or sloppy English – for instance, the “g” that gets lost from our -ing endings or the deletion of a “t” when we say a word like “innernet” – actually reflect speech habits that are centuries old.

Take, for example, “often.” Originally spoken with the “t,” that pronunciation gradually became less favored around the 15th century, alongside that “l” in “talk” and the “k” in know. Meanwhile, the “s” now stuck on the back of verbs like “does” and “makes” began as a dialectal variant that only became popular in 16th-century London. It gradually replaced “th” whenever third persons were involved, as in “The lady doth protest too much.”

While dropping the “l” in talk may have been initially frowned upon, today it would be strange if you pronounced the letter. And the shift makes sense: It smoothed out some linguistic awkwardness for the sake of efficiency.

If people learned to look at language more like linguists, they might come around to seeing that there is more than one perspective on what good speech consists of.

And yes, that absolutely is a sentence ending with a preposition – something many modern grammar guides discourage, even though the idea only took hold after 18th-century grammarian Robert Lowth intimated it was a less elegant choice based on the model of Latin.

Though Lowth voiced no hard and fast rule against it, many a grammar maven later misconstrued his advice as an admonition. Just like that, a mere suggestion became grammatical law.

The rise of the grammar sticklers

Many of today’s ideas about what constitutes correct English are based on a singular – often mistaken – 19th-century view of the forces that govern our language.

In the late 18th century, the English-speaking world began experiencing class restructuring and higher literacy rates. As greater class mobility became possible, accent differences became class markers that separated new money from old money.

Emulation of upper-crust speech norms became popular among the nouveau riche. With literacy also on the rise, grammarians and elocutionists raced to dictate the terms of “proper” English on and off the page, which led to the rise of usage guides and dictionaries that were eager to sell a certain brand of speech.

Another example of grammarian angst reconfiguring the view of an otherwise perfectly fine form is the droppin’ of the “g.” It became so tied to slovenly speech that it was branded with an apostrophe in the 19th century to make sure no one missed its lackadaisical and nonstandard nature.

Up until the 19th century, however, no one seemed to care whether one pronounced it as “-in” or “-ing.”

Evidence suggests that -ing wasn’t even heard as the correct form. Many elocution guides from the 18th century provide rhyming word pairs like “herring/heron,” “coughing/coffin” and “jerking/jerkin,” which suggest that “-in” may have been the preferred pronunciation of words ending with “-ing.” Even writer and satirist Jonathan Swift – a frequent lobbyist for “proper” English – rhymes “brewing” with “ruin” in his 1731 poem “Verses on the Death of Dr. Swift, D.S.P.D..”

Embrace the change

Language has always shifted and evolved. People often bristle at changes from what they’ve known to what is new. And maybe that’s because this process often begins with speakers that society usually looks less favorably on: the young, the female, the poor, the nonwhite.

But it’s important to remember that being disliked and bad are not the same thing – that today’s speech pariahs are driven by the same linguistic and social needs as the Londoners who started going with “does” instead of “doth” or dropped the “t” in often.

So if you think the speech that comes from your lips is the “correct” version, think again. Thou, like every other English speaker, art literally the product of centuries of linguistic reinvention.

This article originally appeared on The Conversation. You can read it here.

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Photo credit: Canva – (L) Kids wrestling in the yard; (R) young children playing chess

Culture, Media

10 boys and 10 girls were left alone in separate houses and the different results are just wild

The premise was simple but high stakes.

Adam Albright Hanna

GOOD Staff

4/19/2026

It sounds like the plot of William Golding’s Lord of the Flies. However, in the mid-2000s, it was a very real and very controversial reality television experiment.

Footage from the UK Channel 4 documentary Boys and Girls Alone is captivating audiences all over again. It offers a fascinating and chaotic look at what happens when you remove parents from the equation.

The premise was simple but high stakes. Twenty children, aged 11 and 12, were split into two groups by gender. Ten boys and ten girls were placed in separate houses and told to live without adult supervision for five days.

The Setup

While there were safety nets in place, the day-to-day living was entirely up to the kids. A camera crew was present but instructed not to intervene unless safety was at risk. The children could also ring a bell to speak to a nurse or psychiatrist.

The houses were fully stocked with food, cleaning supplies, toys, and paints. Everything they needed to survive was there. They just had to figure out how to use it.

The Boys: Instant Chaos

In the boys’ house, the unraveling was almost immediate. The newfound freedom triggered a rapid descent into high-energy anarchy.

They engaged in water pistol fights and threw cushions. In one memorable instance, a boy named Michael covered the carpet in sticky popcorn kernels just because he could.

The destruction eventually escalated to the walls. The boys covered the house in writing, drawing, and paint. But the euphoria of freedom eventually crashed into the reality of consequences.

“We never expected to be like this, but I’m really upset that we trashed it so badly,” one boy admitted in the footage. “We were trying to explore everything at once and got too carried away in ourselves.”

Their attempts to clean up were frantic and largely ineffective. Nutrition also took a hit. Despite having completed a cooking course, the boys survived mostly on cereal, sugar, and the occasional frozen pizza. By the end of the week, the house was trashed, and the group had fractured into opposing factions.

The Girls: Organized Society

The girls’ house looked like a different planet.

In stark contrast to the mayhem next door, the girls immediately established a functioning society. They organized a cooking roster, with a girl named Sherry preparing their first meal. They baked cakes. They put on a fashion show. They even drew up a scrupulous chores list to ensure the house stayed livable.

While their stay wasn’t devoid of interpersonal drama, the experiment highlighted a fascinating divergence in socialization. Left to their own devices, the girls prioritized community and maintenance. The boys tested the absolute limits of their environment until it broke.

The documentary was controversial when it aired, with critics questioning the ethics of placing children in unsupervised situations for entertainment. But what made it so enduring, and why footage keeps resurfacing years later, is what it reveals about how kids are socialized long before anyone puts them in a house together. The boys weren’t born anarchists and the girls weren’t born organizers. They arrived at those houses already shaped by years of being told, implicitly and explicitly, what boys do and what girls do. Whether that’s a nature story or a nurture story is the question the documentary keeps asking without quite answering, which is probably why people are still watching and arguing about it nearly two decades later.

This article originally appeared two years ago. It has been updated.

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