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Science-Backed Insights

The NSDR Blog

Explore the latest research on Non-Sleep Deep Rest, sleep optimization, and evidence-based techniques to enhance your well-being.

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Latest Articles

Magnesium Glycinate vs Citrate: Which Form Actually Works?

Here's the thing: most magnesium articles tell you glycinate is "more bioavailable" without giving you a single number. So I dug into this.

March 12, 202612 min read

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Supplements for Anxiety: 9 Options That Actually Work (2026)

NSDRHubermanSleep

Supplements for Anxiety: 9 Options That Actually Work (2026)

So I dug into this and here's what I found: chronic anxiety affects tens of millions of Americans, and most never find real relief from medication alone. Supple...

March 12, 202610 min read

NSDRHubermanSleep

How to Reduce Cortisol Naturally: 7 Science-Backed Methods

Here's the thing about how to reduce cortisol naturally: everyone tells you cortisol is a "stress hormone," but Stanford neuroscientist Andrew Huberman argues i...

March 12, 202614 min read

Huberman Supplements List: The Full 2026 Stack Explained

NSDRHubermanSleep

Huberman Supplements List: The Full 2026 Stack Explained

So I dug into every Huberman episode that mentions supplements, covering 20+ compounds across dozens of episodes, and here's the thing: most roundups miss the w...

March 10, 202611 min read

Sleep Cycle Calculator: How to Find Your Ideal Bedtime

Sleep Cycle Calculator: How to Find Your Ideal Bedtime

Here's the thing about sleep: you can get your full 8 hours and still wake up feeling like garbage. I spent way too long blaming the amount of sleep I was getti...

March 10, 202611 min read

Stages of Sleep Explained: What Your Brain Does Each Night

NSDRSleepBreathwork

Stages of Sleep Explained: What Your Brain Does Each Night

Your brain cycles through four distinct stages of sleep every 90 minutes, and the timing of each stage determines whether you wake up restored or wrecked. Here'...

March 10, 202611 min read

Melatonin Side Effects: The 3.9-Minute Reality and What Actually Works

NSDRSleepBreathwork

Melatonin Side Effects: The 3.9-Minute Reality and What Actually Works

Here's the thing about melatonin: it barely works for most people. We're talking 3.9 extra minutes of sleep onset according to a meta-analysis of 79 studies. Me...

March 9, 20269 min read

NSDRHubermanSleep

How to Stop Sleep Anxiety: 7 Methods That Work

Sleep anxiety is a trap. You lie there worrying about not sleeping, which makes sleep impossible, which gives you more to worry about. Here's the thing: this is...

March 9, 202611 min read

NSDR Focus Protocol: A 5-Step Guide That Actually Works

NSDRHubermanSleep

NSDR Focus Protocol: A 5-Step Guide That Actually Works

A single NSDR session can boost dopamine by 65% and drop cortisol measurably, per a Copenhagen PET scan study. Here's a 5-step NSDR focus protocol with the exac...

March 9, 202613 min read

Illustration for Why Do I Wake Up at 3am? The Science and How to Stop It

Why Do I Wake Up at 3am? The Science and How to Stop It

Why do I wake up at 3am? Over a third of adults deal with this at least three times a week, and most have no idea why. If you're reading this at 3am right now, ...

March 3, 202612 min read

Illustration for Caffeine Half Life: How Long It Really Stays in You

NSDRHubermanSleep

Caffeine Half Life: How Long It Really Stays in You

The caffeine half life is roughly 5 hours. But that single number is kind of useless on its own. Your genetics, medications, and even oral contraceptives can sh...

March 3, 202612 min read

Illustration for Apigenin for Sleep: Does It Work & How to Use It

NSDRHubermanSleep

Apigenin for Sleep: Does It Work & How to Use It

Apigenin is one of the most talked-about sleep supplements right now, mostly because Huberman put it in his nightly stack. But here's the thing: there are zero ...

March 3, 202612 min read

Illustration for Sleep Hygiene Checklist

NSDRHubermanSleep

Sleep Hygiene Checklist: A Full-Day Protocol for Better Rest

One night of four hours drops your natural killer cell activity by 70%. That's from Matt Walker at UC Berkeley. Here's a 12-point sleep hygiene checklist coveri...

March 3, 202614 min read

Illustration for Optimal Sleep Temperature

NSDRHubermanSleep

Optimal Sleep Temperature: How to Find Your Ideal Range

Your body needs to drop its core temperature by 2-3 degrees to fall asleep. That's not a preference. That's the biological trigger. If your room is blocking tha...

March 3, 202612 min read

Illustration for Glycine for Sleep

NSDRHubermanSleep

Glycine for Sleep: How It Works, Dosage & When to Cycle

Three grams of glycine before bed lowered core body temperature and improved subjective sleep quality across multiple human trials (Inagawa et al., 2006; Bannai...

March 3, 202612 min read

Minimalist line-art brain illustration with neural network nodes on warm cream background

NSDR BasicsGuides

How to Write an NSDR Script in 5 Phases (With Examples)

Most NSDR scripts online are pre-made text to read aloud. Here's the 5-phase process for writing your own from scratch, with annotated examples and the neuroscience behind each decision.

March 2, 202612 min read

Morning Sunlight for Sleep: Why It Works & How to Do It

NSDRHubermanSleep

Morning Sunlight for Sleep: Why It Works & How to Do It

Here's the short version: a study of 1,762 adults found that each extra 30 minutes of morning sun shifted sleep timing 23 minutes earlier. Not more sleep. Earli...

March 2, 202613 min read

Caffeine Timing for Focus: 5 Protocols That Actually Work

Caffeine Timing for Focus: 5 Protocols That Actually Work

Most people get caffeine timing for focus completely wrong. They think it's about dose: how many milligrams, how many cups, which brand of cold brew. But here's...

March 2, 202613 min read

Green Noise vs White Noise: Which Actually Helps You Sleep?

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Green Noise vs White Noise: Which Actually Helps You Sleep?

Green noise has zero dedicated studies and white noise sleep data is equivocal across 37 trials. Here's what actually works for sleep vs focus, based on the res...

March 2, 202612 min read

SleepHubermanSupplements

Magnesium Threonate for Sleep: Does It Really Work?

Magnesium L-threonate is the only magnesium form that efficiently crosses the blood-brain barrier. That one fact is why it keeps showing up in every sleep suppl...

February 25, 202615 min read

SleepHubermanSupplements

L-Theanine for Sleep: 5 Ways to Use It (Dosage + Timing)

L-theanine doesn't knock you out. It quiets the mental noise that keeps you awake , boosting alpha brain waves and GABA without sedation. Here's the thing: afte...

February 25, 202613 min read

NSDRHubermanSleep

How to Sleep Better: 7 Methods Backed by Neuroscience

Look, one in three Americans isn't getting enough sleep. If you want to know how to sleep better, most advice tells you what to do without explaining why your b...

February 25, 202613 min read

How to Fix Your Sleep Schedule: A 7-Step Reset Plan

NSDRHubermanSleep

How to Fix Your Sleep Schedule: A 7-Step Reset Plan

Learn how to fix your sleep schedule with a 7-step reset plan based on circadian science, light exposure timing, temperature, and nervous system regulation.

February 24, 202613 min read

Autonomic Nervous System Explained: 3 Key Branches

NSDRHubermanSleep

Autonomic Nervous System Explained: 3 Key Branches

Your autonomic nervous system controls heart rate, digestion, and stress. Learn the 3 branches, how they work together, and how to regulate them.

February 24, 202612 min read

Yoga Nidra: What It Is and Why Neuroscientists Care

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Yoga Nidra: What It Is and Why Neuroscientists Care

Yoga nidra triggers a 65% dopamine increase per PET scans. Here's what it is, the brain science, proven benefits, and a step-by-step protocol.

February 24, 202614 min read

Parasympathetic Nervous System: How It Keeps You Calm

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Parasympathetic Nervous System: How It Keeps You Calm

Your parasympathetic nervous system controls rest, digestion, and recovery. Learn how it works, why vagal tone matters, and 5 ways to activate it.

February 23, 202615 min read

How to Recover From Poor Sleep: A Same-Day Protocol

NSDRHubermanSleep

How to Recover From Poor Sleep: A Same-Day Protocol

A same-day recovery protocol for poor sleep. 7 science-backed steps to regulate your nervous system, restore dopamine, and get back on track.

February 23, 202613 min read

Mental Fatigue Recovery: 7 Protocols Worth Trying

NSDRHubermanSleep

Mental Fatigue Recovery: 7 Protocols Worth Trying

Mental fatigue has a neurochemical cause. Here are 7 evidence-based recovery protocols, from 10-minute NSDR sessions to daily systems that work.

February 23, 202613 min read

How to Nap Without Feeling Groggy (or Skip Naps Entirely)

NSDRHubermanSleep

How to Nap Without Feeling Groggy (or Skip Naps Entirely)

Learn why naps make you groggy (sleep inertia), 7 science-backed tips to nap without fog, and how NSDR delivers the same recovery with zero grogginess.

February 20, 202611 min read

Afternoon Energy Crash: The Fix Nobody Talks About

NSDRHubermanSleep

Afternoon Energy Crash: The Fix Nobody Talks About

The afternoon energy crash is circadian, not dietary. Learn the science behind it and how a 10-minute NSDR session can restore your focus without caffeine.

February 20, 202611 min read