How to Remember Things — Hemant Thakre

Memory & Learning

Your Memory Isn't Bad. You Just Never Paid Attention in the First Place.

Six science-backed techniques to actually remember things — from the ancient Memory Palace to the one habit that triples retention overnight.

Hemant Thakre

Written by · 9 min read

Brain Science Study Tips Productivity Self-Improvement

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I used to think I had a bad memory. I'd walk into a room and forget why I came in. I'd meet someone, repeat their name twice out loud, and still blank on it thirty seconds later. Turns out, that's not really a memory problem. It's an attention problem. And knowing that changes everything.

Neuroscientist Lisa Genova has a line that hit me harder than I expected: "the first necessary ingredient in creating a memory that lasts longer than the present moment is attention." If you weren't focused when you put your keys down, your brain never stored where they went. The memory doesn't exist to retrieve — it was never made.

Which is, oddly, freeing. Your memory isn't broken. You've just been running it on autopilot. Here's how to actually use it — backed by research, not by people selling you planners.

Memory is a two-step process: attention encodes it, sleep locks it in.

80%

of material is still remembered a week later by students who actively test themselves — compared to 34% for those who just reread their notes. That's not a marginal difference. That's the gap between actually knowing something and thinking you do.

1 Stop Re-Reading. Start Struggling.

Here's a study habit most of us have: read the chapter, highlight the important bits, read them again. It feels productive. Things start looking familiar, so you assume they're going in. They're not, really.

Familiarity isn't memory — it's the illusion of memory. Cognitive scientists call it the "fluency illusion": things feel like they should be easy to recall just because they're easy to read. What actually encodes information is the effort of pulling it out of your own head. Close the book. Write down everything you remember. Take a quiz. That friction? That's the actual learning happening.

✦ Try This Tonight

After reading anything you want to retain, close it and spend five minutes writing a brain dump — every point, in any order, from memory alone. The things you can't recall are exactly what need more time. The struggle is the lesson, not a sign you're failing.

2 Cramming Is a Lie You Tell Yourself the Night Before

Cramming works, in a narrow sense. I've done it, you've done it, it gets you through the exam. But two weeks later, it's gone. That's because marathon study sessions keep things in short-term memory, which has an expiry date measured in days, not months.

UC Davis researcher Charan Ranganath explains that memory consolidation — the part where things actually move into long-term storage — happens during rest, between sessions. You need the gaps. The technique is called spaced repetition: review something after a day, then three days, then a week, then a month. Each review resets the forgetting clock just before the memory fades.

Apps like Anki do the scheduling automatically. But even a rough handwritten calendar beats cramming every single time.

Each review resets the forgetting clock just before the memory fades — high retention with much less total effort.

3 The Memory Palace Is Real (Ridiculous, and It Works)

If you've seen Sherlock Holmes access his "mind palace" on screen and assumed it was a TV invention — it's not. The method of loci is ancient. Greek orators used it to deliver multi-hour speeches from memory. And it works for practically anyone willing to feel slightly absurd while trying it.

The idea: pick a place you know well — your home, your daily walk, your old school. Mentally walk through it and "place" each thing you want to remember at a specific spot. The stranger the image, the better it sticks. Psychiatrist Dr. Kailas Roberts notes that familiar spatial memories are much harder to erase than short-term ones, which is exactly why they make such good anchors.

"If the goal is to memorize a list or material for a speech, the method of loci is probably the easiest way to do it."
— Michael Hasselmo, Neuroscientist, Boston University

Memory champions use it to memorize shuffled decks of cards in under a minute. You can use it for a grocery list, a presentation, or anyone's name. It sounds like a trick. It's actually just how your spatial memory already works — you're just borrowing it.

Place bizarre mental images in rooms you already know. The stranger the image, the harder your brain works to forget it.

4 Your Brain Only Remembers What Means Something to It

Random facts slide off. Connected ones stick. This isn't motivational — it's how memory is physically structured. Your brain is constantly scanning for patterns, hooks, and links to things it already knows.

Ranganath describes it as "meaningful encoding": when you tie new information to something already stored, the brain builds a richer, harder-to-lose trace. Meeting someone named Sandy? Picture her walking on a beach. Someone named Baker? Picture them pulling bread from an oven. Absurd? Yes. Effective? Yes.

The same goes for concepts. When you learn something new, ask yourself: what does this remind me of? What does it connect to? That link is your memory hook — and it matters far more than reading the same sentence three times.

✦ The "Teach It" Test

Explain the concept out loud to someone — or your pet, or your houseplant. If you stumble, that's the exact gap in your understanding. Teaching forces you to organize things, not just recognize them. If you can explain it clearly, it's yours.

5 Sleep Isn't Where You Rest. It's Where You Actually Learn.

I used to stay up until 1am studying before exams. I'd walk in tired, vaguely convinced I'd absorbed enough. I hadn't. Nobody does, because the learning doesn't finish while you study — it finishes while you sleep.

During deep sleep, the brain moves memories from the hippocampus (a short-term buffer) into the cortex for long-term storage. Skip that step, and the transfer is incomplete. A study published in Nature Neuroscience found people sleeping under six hours performed noticeably worse on memory tests than those who got a full night. Even a 20-minute nap after studying has measurable effects on later recall.

The lesson isn't "study less." It's "stop treating sleep like time you're losing." That's when the work actually gets consolidated.

Sleep isn't wasted time — it's when memories get filed. Cut it short and you cut retention nearly in half.

6 A Walk Sharpens the Brain More Than You'd Think

This is the one that surprised me most. Regular aerobic exercise — the kind that gets your heart up — has been shown to increase the physical size of the hippocampus, the part of the brain most directly involved in forming new memories. Not metaphorically larger. Measurably, structurally larger.

You don't need to train for anything. A 20-minute walk before studying is enough to improve focus and retention that session. The link between moving your body and remembering things better is one of the most consistently replicated findings in neuroscience — and one of the most ignored, probably because it doesn't feel like a "brain hack."

The Thread Running Through All of This

Every technique here — testing yourself, spacing reviews, building a memory palace, making things meaningful — feels harder than just reading and highlighting. That's not a flaw. Cognitive scientists Henry Roediger and Mark McDaniel found that the extra cognitive effort required to retrieve and re-learn drives deeper encoding. The difficulty is the mechanism, not a side effect.

And here's the most reassuring thing I found while writing this: Monica Thieu, a four-time Jeopardy! champion and memory researcher at Emory University, says "with practice, absolutely everyone can make their memory stronger." Not just young people. Not just people who seem naturally sharp. Everyone.

Your memory isn't a fixed thing. It's a skill. You just have to actually use it.

Start With Just One.

Close whatever you're trying to learn right now and write down everything you remember. That single habit, done consistently, will do more for your memory than any app, planner, or highlighter ever has.

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