The Sleep Journal

A person asleep on their side in soft light, head resting on a pillow

Why One Nostril Blocks at Night (and Swaps Sides While You Sleep)

Roll onto your side and the lower nostril starts to close. That is not a fault, it is the nasal cycle, and lying down makes it far more noticeable. Here...

Why One Nostril Blocks at Night (and Swaps Sides While You Sleep)

Roll onto your side and the lower nostril starts to close. That is not a fault, it is the nasal cycle, and lying down makes it far more noticeable. Here...

An empty city street between buildings at dusk, the quiet hour after an evening training session

Train Late, Sleep Fine: What the Evening Session Really Does to Your Night

Evening training gets blamed for bad sleep more often than the research supports. Here is what 23 controlled trials actually found, the one exception worth knowing, and how to land...

Train Late, Sleep Fine: What the Evening Session Really Does to Your Night

Evening training gets blamed for bad sleep more often than the research supports. Here is what 23 controlled trials actually found, the one exception worth knowing, and how to land...

A dark bedside table at night with a small lamp and clock, suggesting a steady, repeatable bedtime routine

Same Time, Every Night: Why Sleep Regularity Beats Chasing Extra Hours

Most of us grade our sleep on hours slept. The research points somewhere less obvious: how consistently you sleep may matter more than how long.

Same Time, Every Night: Why Sleep Regularity Beats Chasing Extra Hours

Most of us grade our sleep on hours slept. The research points somewhere less obvious: how consistently you sleep may matter more than how long.

A near-empty wine glass in low, warm light at the end of the evening, suggesting a last drink before bed

Last Drinks: What Alcohol Does to the Second Half of Your Night

A drink before bed helps you fall asleep, then quietly unravels the rest of your night. Here's what alcohol does to REM sleep, your airway and your mornings, and how...

Last Drinks: What Alcohol Does to the Second Half of Your Night

A drink before bed helps you fall asleep, then quietly unravels the rest of your night. Here's what alcohol does to REM sleep, your airway and your mornings, and how...

A dimly lit, calm bedroom at dawn with soft light coming through the window — quiet spring morning setting for restful, easy nasal breathing.

Blocked at Bedtime: Getting Your Nights Ready for the Australian Spring

Something shifts in August. The afternoons stretch a little longer, the jumper comes off earlier, and the first pollen is already drifting about. Spring is close. And for a lot...

Blocked at Bedtime: Getting Your Nights Ready for the Australian Spring

Something shifts in August. The afternoons stretch a little longer, the jumper comes off earlier, and the first pollen is already drifting about. Spring is close. And for a lot...

Dark, quiet bedroom in the pre-dawn hours, evoking a peaceful 3am wake-up and calm return to sleep

The 3am Visitor: Why You Surface Before Dawn — and How to Drift Back

You know the feeling. The room is dark, the house is silent, and your eyes are suddenly, unhelpfully open. You reach for your phone: 3:07am. Somewhere between frustration and unease,...

The 3am Visitor: Why You Surface Before Dawn — and How to Drift Back

You know the feeling. The room is dark, the house is silent, and your eyes are suddenly, unhelpfully open. You reach for your phone: 3:07am. Somewhere between frustration and unease,...

A warm cup of coffee on a dark background, illustrating how afternoon caffeine timing affects deep sleep

The Coffee Curfew: When to Put Down the Cup for Deeper Sleep

Coffee is one of life's small, reliable pleasures. A flat white to start the day, a long black to push through the afternoon slump — for most of us it's...

The Coffee Curfew: When to Put Down the Cup for Deeper Sleep

Coffee is one of life's small, reliable pleasures. A flat white to start the day, a long black to push through the afternoon slump — for most of us it's...

Soft early morning sunlight streaming through a window into a dim, quiet room

Your Night Starts in the Morning: How Light Sets Your Sleep Clock

Most sleep advice focuses on the hour before bed. But the strongest lever on your sleep clock happens the moment you wake up — here's how morning light works, and...

Your Night Starts in the Morning: How Light Sets Your Sleep Clock

Most sleep advice focuses on the hour before bed. But the strongest lever on your sleep clock happens the moment you wake up — here's how morning light works, and...

Cozy bed with warm morning sunlight streaming through the window on a winter morning

Winter Sleep, Sorted: Why the Cold Season Disrupts Your Rest (and How to Fix It)

Australian winter changes how you sleep — darker mornings throw off your body clock and cold, dry air congests your nose and pushes you into mouth breathing. Here's the science,...

Winter Sleep, Sorted: Why the Cold Season Disrupts Your Rest (and How to Fix It)

Australian winter changes how you sleep — darker mornings throw off your body clock and cold, dry air congests your nose and pushes you into mouth breathing. Here's the science,...

A man asleep face down on a desk beside a laptop and a half-finished coffee

Why You're Tired Even Though You're Getting 7–9 Hours of Sleep

Getting 7–9 hours but still waking up tired? Here are the real reasons your sleep isn't restoring you — from mouth breathing to room temperature — and the simple changes...

Why You're Tired Even Though You're Getting 7–9 Hours of Sleep

Getting 7–9 hours but still waking up tired? Here are the real reasons your sleep isn't restoring you — from mouth breathing to room temperature — and the simple changes...

Why Nasal Breathing Changes Everything About Your Sleep

Why Nasal Breathing Changes Everything About Your Sleep

Most people don't think about how they breathe at night. But the switch from mouth to nasal breathing is one of the most impactful — and most overlooked — changes...

Why Nasal Breathing Changes Everything About Your Sleep

Most people don't think about how they breathe at night. But the switch from mouth to nasal breathing is one of the most impactful — and most overlooked — changes...

Sleeping peacefully wearing 18pointthree Mouth Tape and a nasal strip

Why You Should Be Using Mouth Tape

Most people spend their days focused on improving energy, focus, recovery, and performance — while overlooking one of the biggest foundations of all: how they breathe during sleep. If you...

Why You Should Be Using Mouth Tape

Most people spend their days focused on improving energy, focus, recovery, and performance — while overlooking one of the biggest foundations of all: how they breathe during sleep. If you...

Why You Should Be Using Nasal Strips

Why You Should Be Using Nasal Strips

Breathing is something most people never think about — until poor sleep, congestion, snoring, or restless nights start affecting how they feel during the day. While sleep supplements and routines...

Why You Should Be Using Nasal Strips

Breathing is something most people never think about — until poor sleep, congestion, snoring, or restless nights start affecting how they feel during the day. While sleep supplements and routines...

Why 18.3°C? The Truth About Sleep Temperature

Why 18.3°C? The Truth About Sleep Temperature

Most people ignore one of the biggest factors affecting sleep quality: bedroom temperature. Discover why 18.3°C is considered the ideal sleep temperature and how a cooler room can improve deep...

Why 18.3°C? The Truth About Sleep Temperature

Most people ignore one of the biggest factors affecting sleep quality: bedroom temperature. Discover why 18.3°C is considered the ideal sleep temperature and how a cooler room can improve deep...

Why Deep Sleep Is the Ultimate Life Upgrade

Why Deep Sleep Is the Ultimate Life Upgrade

In a world obsessed with productivity, biohacking, and morning routines, the simplest performance enhancer often gets overlooked: sleep. While hustle culture praises the early riser, science tells a different story....

Why Deep Sleep Is the Ultimate Life Upgrade

In a world obsessed with productivity, biohacking, and morning routines, the simplest performance enhancer often gets overlooked: sleep. While hustle culture praises the early riser, science tells a different story....