#circadian-rhythm
61 episodes · Page 2 of 3
#3039: How Airlines Engineer Mass Sleep at 35,000 Feet
Airlines quietly perfected a group sleep induction system. Here's the lighting, meal, and temperature playbook — and how to steal it for home.
#3027: Why You Wake at 3 AM and Can't Get Back to Sleep
60% of chronic insomnia cases involve waking up mid-night. Here's what's different in your brain and what actually works.
#2816: Do You Need a Window to Be Happy?
Natural light isn't just nice — your brain has a dedicated biological pathway for it. Here's what happens when you take that away.
#2749: The 16-Hour Day Behind an 8-Show Week
What a Broadway actor's day actually looks like: silent mornings, straw phonation, and two-show days.
#2738: Why Can't Humans Sleep 24 Hours Straight?
Even when exhausted, your body won't let you sleep past 12-13 hours. Here's the biology behind the hard cap.
#2719: How Streetlight-Level Light Disrupts Mammal Immunity
Even minimal artificial light at night—equivalent to street lighting—disrupts immune rhythms and increases mortality 2.35x in wild mammals.
#2710: Is Sunlight a Vitamin or a Hormone?
Why calling vitamin D a "vitamin" is a historical accident—and what sunlight does that supplements can't.
#2708: Why Histamine Keeps You Awake and Makes You Sneeze
How one molecule runs both your allergy symptoms and your brain’s wakefulness system.
#2626: The Trust Problem in Bedroom Automation
Smart glass vs smart curtains for circadian health — what works in a rental bedroom without owning the walls?
#2623: How Much Bed Space Do You Actually Need to Sleep Well?
140cm bed for two? Research shows a 62% reduction in sleep disturbances just from having adequate space.
#2619: The Sleep Doctor Shortage
Night owls vs. clinical disorder—what sleep medicine actually says about delayed sleep-wake phase.
#2600: Circadian Lighting Gradients in Home Assistant
How to build a smooth, override-friendly circadian lighting system using Adaptive Lighting in Home Assistant.
#2589: Can You Actually See a Sleep Specialist?
Sleep medicine is real but hard to access. Here’s how the system works and what actually helps.
#2528: How New Drugs Actually Fix Your Body Clock
Melatonin receptor agonists vs. sedatives — the science of fixing your clock instead of knocking it out.
#2427: The Art of the Non-Productive Day: A Sloth's Guide
A deliberate, hour-by-hour template for guilt-free laziness, backed by neuroscience and sloth wisdom.
#2294: The Side Sleeper’s Edge: Why Most of Us Sleep Curled Up
Why do 74% of people sleep on their side? Explore the science behind sleep positions and their impact on health and comfort.
#2257: How Maya, Inuit, and Hadza Cultures Engineer Sleep
What can the sleep practices of the Maya, Inuit, and Hadza teach us? It's not about tricks, but about building sleep into the fabric of life.
#1791: Why the Slowest Animal Has 4 Billion Views
The sloth has replaced the hustle icon. Here's why 4 billion views on TikTok prove we're desperate for metabolic stillness.
#1591: The Brain’s Nightly Power Wash: Cleaning Away Dementia
Discover how your brain "power-washes" itself during deep sleep and why a clogged system could be the hidden driver behind dementia.
#1588: The Architecture of Sleep: Rebuilding Restorative Rest
Is sedation the same as sleep? Explore the biological map of rest and learn how to renovate your brain’s nightly cycles for true recovery.
#1514: The Midnight Watch: Is Our 8-Hour Sleep Block a Lie?
Before the industrial age, humans didn't sleep in one block. Discover why "first and second sleep" might be better for your brain.
#1375: Metabolic Bankruptcy: Why the Brain Fails Under Fire
Why does the brain fail under constant threat? Discover the science of metabolic bankruptcy and the high cost of perpetual vigilance.
#1273: Lighting the Dark: The Science of Seasonal Depression
Discover why your brain stalls in the dark and how "personal satellites" of light can reset your internal clock to beat the winter blues.
#1265: The Biology of Light: Designing for Your Internal Clock
Discover why natural light is a biological nutrient and how interior design can fix your productivity, mood, and sleep.