Optimal Protocols for Studying & Learning

High-Level Overview

In this solo episode, Andrew Huberman tackles a question that matters to anyone still learning, in school or not: what does the science say is the best way to study? His central reframe is that learning is mostly about offsetting forgetting. Most new information is naturally discarded, so good studying is the set of practices that protect what you want to keep. Drawing on more than a century of research across education, psychology and neuroscience, he argues that the single most powerful and underused studying tool is testing, especially self-testing done soon after first exposure to new material.

Along the way he reviews how neuroplasticity works, how focus and sleep set the stage for learning, what the most successful medical students do differently, and how emotion, short pauses and interleaved anecdotes help material stick. The tone is teacherly and a little playful: Huberman gives the audience pop quizzes throughout the episode to practice what he is preaching, and shares stories from his own undergraduate neuroanatomy course. The episode moves from basic neuroscience to practical study habits and then into a deep look at the research on testing.

The Discussion Explores:

• Why preferred learning styles matter far less than offsetting forgetting
• The three mechanisms of neuroplasticity, and why removing connections is not a bad thing
• Focus and alertness as the first step of learning, and sleep as the second
• Tools for training focus, including mindfulness meditation and visual focus drills
• The study habits of the highest-performing medical students
• Why effortful, challenging study works better than easy review
• Research showing self-testing, done early and often, beats rereading, and why rereading breeds false confidence
• Emotion, gap effects, interleaving, and the path from skill to mastery to virtuosity

Deep Dive into Main Ideas

Learning as the Art of Offsetting Forgetting

Huberman opens with a humbling point: the best learning practices are not intuitive, and whatever you believe about how you learn best is probably wrong. Many people identify as visual or auditory learners, or prefer highlighting or group study, but he says that when you look at the research on preferred learning styles, pretty much all of that melts away. What matters is not the medium in which information arrives but whether you engage the parts of your memory systems that prevent forgetting.

He asks listeners to reframe studying entirely. Rather than thinking of studying as putting information in, think of it as defending against the natural loss of information that follows any new exposure, whether cognitive, musical, mathematical or motor. As he puts it, You're trying to inoculate against forgetting. He adds that forgetting is not a flaw: people with rare conditions who remember every detail struggle badly in work and relationships. The goal is a great memory for the right things.

How Neuroplasticity Works

Neuroplasticity is the nervous system's ability to change in response to experience, and it happens in three ways: strengthening connections between neurons, weakening them, and adding new neurons (neurogenesis). Huberman stresses that neurogenesis, though popular in the media, is rare in the adult human brain, limited mainly to the olfactory bulb and the dentate gyrus of the hippocampus, and contributes almost nothing to everyday learning. The real work is done by strengthening, weakening and forming connections among existing neurons.

He cautions against attaching values to adding or removing connections. A baby's clumsy motor skills improve into a teenager's precise movements largely through the removal of neural connections, with the remaining ones becoming more robust and reliable. He then gives the audience its first quiz on the three mechanisms, explaining that the quiz itself is the point: stopping to test yourself is exactly what the research says works, and noticing where you got something wrong is itself valuable.

Step One: Focus and Alertness

Learning is a two-step process. The first step is active engagement, which is really focus, and focus requires alertness. Being focused signals to the brain, through neurochemicals, that something is important and that circuits need to change. The foundation is a good night's sleep before learning, along with sensible stress levels, hydration and an appropriate amount of caffeine. Huberman calls sleep the best cognitive enhancer there is.

He encourages a silent internal script, telling yourself that this matters and that you need to learn it, to voluntarily ramp up attention instead of waiting for the material to capture you. People with ADHD can focus intensely on things they love but struggle otherwise, and he says the hallmark of good learners is the ability to force attention back to the material again and again. That sense of strain is a good sign: it reflects the release of neuromodulators such as epinephrine that cue circuits to change later. If learning felt effortless, the nervous system would have no reason to change.

To train focus itself, he cites Wendy Suzuki's work at New York University showing that about 10 minutes a day of mindfulness meditation, simply sitting or lying down, focusing on the breath and bringing attention back when it drifts, improves focus, memory and recall. An eyes-open version, fixing your gaze on a visual target a foot or a few feet away for one to several minutes while blinking normally, works as a perceptual exercise too. Missing a day is no big deal, and timing is flexible, though some people find late-night practice disrupts sleep.

Step Two: Sleep, NSDR and the First Night Effect

The actual rewiring of connections happens not while you study but during deep sleep and sleep-like states, particularly rapid eye movement sleep in the latter part of the night. Research on the first night effect shows that material learned on a given day is mostly consolidated during that very night's sleep. A bad night does not erase what you learned, but Huberman urges students to protect the night after learning and to be wary of late caffeine and all-nighters, which undermine the very learning they are meant to serve.

As a complement, he recommends non-sleep deep rest (NSDR), sometimes associated with yoga nidra: a 10 to 20 minute practice that restores mental and physical vigor and enhances neuroplasticity. It can be done after a poor night, in the afternoon, or in the middle of the night when you cannot sleep. Where it falls in your day matters less than doing it.

The Habits of the Best Students

Huberman describes a survey of close to 700 medical students, roughly equal numbers of men and women, that identified the habits of the most successful learners. He acknowledges the correlation-versus-causation limits of self-report data, but says the pattern is clear. The top students schedule dedicated study time. They eliminate distractions, putting phones away and telling friends and family they are unreachable. They study alone. They study about three or four hours a day, split into two or three sessions, at least five days a week. And they teach the material to classmates, which, far from giving others a free ride, is linked to their own strong performance. He recalls the laboratory saying he picked up in training: watch one, do one, teach one.

Consistent timing matters because focus is a limited but renewable resource: adenosine builds up the longer you are awake and resets with sleep. Studying at the same times each day lets the brain entrain to that rhythm, much like sleep, typically within two or three days. The best students also had a broad, aspirational sense of why they were studying, such as how success would change their family or life path. That long-range motivation pulls people through material they do not naturally love. Huberman adds that the courses he now remembers most fondly were the ones he struggled with most, because studying that feels challenging is the most effective. In his words, effort is the cornerstone of learning.

Testing as a Learning Tool

The heart of the episode is the research on testing. In a classic 1917 study, grade school children either reread biographies several times or read them once and then repeatedly tested themselves by recalling details in their heads. The self-testers vastly outperformed the rereaders in both amount and accuracy of recall. More recent studies compared groups that studied a passage four times, studied three times and took one test, or studied once and took three tests, before a final test given days, weeks or even up to a year later. Performance on the final test was essentially proportional to the number of tests taken beforehand, even when scores on the practice tests were only 40 or 50 percent, provided learners saw the correct answers afterward.

The most striking finding concerns confidence. Students who repeatedly restudied felt most confident and predicted they would perform best, while those who were tested three times felt least confident. The opposite turned out to be true. Repeated exposure breeds familiarity, a sense of recognizing material, which Huberman distinguishes from true recall and mastery. Testing forces errors, and errors cue the nervous system to lock in what is right and correct what is wrong. He points to a review in the journal Hippocampus on the neuroscience of familiarity versus recollection, and shares a funny story about mocking that journal's name at a graduate school party hosted by its founder.

He illustrates self-testing with his own undergraduate neuroanatomy course, a notoriously demanding lab class. Overwhelmed, he began lying on his bed, eyes closed, mentally flying through the nervous system from the ear, the eye and the top of the brain. Whenever he hit a gap and did not know what came next, he looked it up and went back to the mental journey. The key to testing, he says, is finding exactly what you know and do not know. He adds a bit of anatomy as an example: the habenula, which is involved in disappointment and depression circuits, is suppressed by morning sunlight and activated by artificial light in the middle of the night.

Timing and Format of Self-Tests

When should you test yourself? In experiments comparing a test right after first exposure, evenly spaced tests, or a test only shortly before the final exam, the group that tested itself very soon after first exposure, the same day or the next, performed best. The group that waited a long time and then crammed two tests back to back performed worst, and spaced testing fell in between. Huberman reports that a single self-test soon after learning cuts forgetting roughly in half compared with no test at all, across musical, mathematical, language and motor learning, regardless of how well you score.

The best self-tests are open-ended, short-answer or long-answer questions that require recall rather than recognition. Standard multiple choice mostly taps familiarity, with the exception of well-designed trick questions of the kind found on the GRE, LSAT or MCAT. He notes that students dislike pop quizzes and punish teachers for them in evaluations, and suggests announcing quizzes in advance or simply committing to test yourself after every session. His practical advice: do not walk out of class and immediately pick up your phone. Take a few seconds or minutes to recall what you just learned. If you find you are confused or overwhelmed, that is useful information that primes plasticity. He frames this entire approach as testing for learning, not evaluation, and he points to reviews titled Testing Enhances Learning and Test-Enhanced Learning.

Emotion, Gap Effects and Interleaving

Huberman closes with three more tools. Gap effects are brief pauses of 5 to 30 seconds during learning, during which neurons in the hippocampus replay the new information at 20 to 30 times the normal rate, much as they do in REM sleep. Emotion strengthens memory because epinephrine and norepinephrine lock experiences in, which is why traumatic events can become one-trial learning and why PTSD treatments like exposure therapy and EMDR work to uncouple emotion from memory. He cites memory researcher James McGaugh's description of a medieval practice of teaching people something and then throwing them into cold water to consolidate it. Huberman is not prescribing a cold plunge, but notes that recalling material during a cold shower is an option for those who use deliberate cold safely, and that caffeine modestly raises epinephrine too. For dull, monotone lectures, learners can raise their own internal intensity by consciously engaging with the material.

Interleaving means sprinkling in small, loosely related anecdotes among challenging material, like his stories about his bulldog Costello. These breaks seem to help the brain repeat the core material and connect it to existing knowledge. He finishes by distinguishing four levels: unskilled, skilled, mastery, and virtuosity, which he describes as knowing material so thoroughly that you can invite uncertainty and spontaneity and surprise even yourself, as great musicians and athletes do.

Conclusion

Huberman's core message is a reframe: testing is not just a tool for evaluating our knowledge but rather a tool for evaluating and reinforcing and building our knowledge. Rereading feels productive and breeds confidence, but self-testing, ideally open-ended and done soon after first exposure, roughly halves forgetting and exposes the gaps you need to fill. Around that core sit the essentials: alertness and deliberate focus during study, trained through simple meditation or visual focus drills; deep sleep, especially the first night after learning, plus NSDR; scheduled, distraction-free, solo study sessions; teaching others; a larger aspiration to pull you through hard material; and emotion, short pauses and interleaved stories to help information stick. Whether you are in a classroom or learning from books and podcasts, these tools are free and can be used on anything you want to remember.

This is a summary of "Optimal Protocols for Studying & Learning" from Huberman Lab, giving you the GIST so you can decide if you want the REST. Listen to the full episode.