Sleep Myth Checker

Your bedtime is the most important sleep habit.

A steady wake time, weekends included, gives your body clock a reliable anchor. Irregular schedules are linked with later body clocks.

An afternoon coffee won't affect tonight's sleep.

A review of 24 studies found caffeine cut sleep by about 45 minutes on average. Stop caffeine by early afternoon. Tea, cola and energy drinks count too.

Morning light makes no difference to sleep.

Light is one of the main cues your body clock uses. Bright morning light helps set it for the day, so get some daylight soon after you wake.

Never look directly at the sun.

A nightcap helps you sleep.

Alcohol can help you nod off faster, but sleep in the second half of the night gets more broken. At higher amounts you also get less REM sleep.

If you can't sleep, stay in bed and keep trying.

Sleep guidelines suggest getting up and going to another room to do something relaxing, then returning when sleepy. It's part of CBT-I.

An evening workout will keep you up.

A review of 23 studies found evening exercise doesn't generally harm sleep in healthy people. If you're sensitive, keep hard workouts out of the last hour before bed.

Room temperature doesn't matter for sleep.

Heat tends to make sleep lighter and more broken. Cool things down with a fan or lighter bedding.

This is for adults. Babies and older people have different needs.

Weekend lie-ins have no downside.

Big gaps between weekday and weekend schedules cause 'social jet lag'. Keep your schedule regular, but if you're short on sleep, an extra hour or two on days off can help.

Adults can do fine on five or six hours.

US sleep experts recommend 7 or more hours on a regular basis; the National Sleep Foundation gives 7 to 9 hours for most adults. Needs vary a little.

Very sleepy despite 7 or more hours? See your GP.

Longer naps are always better.

Afternoon naps help alertness, but longer ones can leave you groggy for a while. If grogginess bothers you, keep naps short.

A nap isn't a fix for drowsy driving. Don't drive tired.

Checking the clock at night is harmless.

In two small experiments, people asked to watch a clock while falling asleep worried more and felt it took longer to drop off. Turn the clock away.

Loud snoring is just a noise problem.

Loud snoring, daytime tiredness and pauses in breathing can be signs of sleep apnoea. Not every snorer has it, it's treatable, and only a sleep study can confirm it.

Very sleepy during the day? Don't drive until you've been checked.

Long-term insomnia just needs better sleep tips.

If insomnia has lasted three months or more, guidelines recommend CBT-I first. Some parts are done with a trained clinician.

Struggling with your mood? Call Lifeline on 13 11 14.

Sleepmaxxing hacks like mouth tape are proven.

A 2025 review found little evidence mouth taping helps and warned of possible harm, especially with a blocked nose. A steady wake time has far better evidence.

You sleep the extra hour when the clocks go back.

Clock changes knock the body clock out of step for a while, and there's no data showing people actually sleep the hour they 'gained'. Keep your usual wake time and get morning light.

The military sleep method puts you to sleep in two minutes.

The fast-sleep promise has never been tested. Relaxation, imagery and slow breathing have some evidence, mostly self-reported, so they can be part of your wind-down.

There's a known number of days you can survive without sleep.

No human data backs a deadly day count. What studies do show is that the mind slips fast: within a day or two people get irritable and misperceive things, and some hallucinate by day three.

Very sleepy? Don't drive. Sleep instead.

A viral eye-movement routine makes you fall asleep.

There's no trial of eye movements to help people fall asleep. The closest is a lab study on fear memories, not sleep. Slow breathing in general has early, limited support.

4-7-8 breathing knocks you out fast.

No trial has tested 4-7-8 for falling asleep. A review of nine studies found slow breathing before bed helped people feel they slept better, but sleep measurements were inconclusive.

Keep breathing gentle, and stop if you feel dizzy.

You can fully catch up on lost sleep at the weekend.

Weekend catch-up is a patch, not a full repair. In a lab trial, lie-ins didn't stop metabolic changes from short weeknights. An extra hour or two may still help.

Hypnic jerks mean something is wrong.

Sleep starts, the jolt as you drift off, are very common and usually harmless. Caffeine, stress and too little sleep may make them stronger, but that list comes from clinical descriptions, not trials.

Sleeping badly in a new place is all in your head.

The first night effect is real: a review of 53 studies found people took longer to fall asleep and woke more on night one. It mostly settled by night two.

Coffee always beats a nap when you're sleepy.

For memory, a nap beat caffeine in one lab study. For sleepiness, a short nap plus caffeine did best in small studies, mostly in young, healthy adults.

If you're drowsy, stop driving. A break or nap helps only briefly.

A scarf hack lets you sleep well upright on a plane.

The scarf trick is untested, but sleeping upright really is worse: in a small lab study, an upright seat gave much less sleep than a flat one.

Keep scarves off your neck.

Sleeping in the 'T-Rex' position is a sign of ADHD.

No study links sleep position with ADHD. Research does show children with ADHD often have more trouble settling and more night waking, but that's nothing to do with how they lie.

Good sleepers fall asleep within seconds.

An expert panel reviewing 277 studies agreed that for adults, falling asleep in about 30 minutes or less counts as good. One slow night isn't a disorder.

Mouth taping improves your sleep.

A 2025 review found ten small, poor-quality studies, and only two showed a benefit. In a small apnoea study, closing the mouth helped some people and made breathing worse for others.

The review warned of possible harm, especially with a blocked nose. Loud snoring can be a sign of sleep apnoea.

Blue light is the only reason screens hurt sleep.

Light plays a part, but probably not the whole story. Night mode didn't improve sleep in a trial, and blue-light glasses haven't been shown to help. Scrolling may keep you awake longer than planned.

Waking at 3am every night is caused by cortisol.

Cortisol naturally rises late in the night as part of its daily rhythm, and brief wakes are normal. The 3am-cortisol link isn't shown. What matters is getting back to sleep.

Pills are the main treatment for insomnia.

Guidelines recommend CBT-I first. On average people fell asleep about 20 minutes faster and spent about 25 minutes less awake at night, and the gains seemed to last.

Nasal strips stop snoring.

Strips can make nose breathing easier, but evidence for snoring is weak and mixed. In people with sleep apnoea, they didn't improve breathing pauses or oxygen levels.

Loud snoring, breathing pauses or tired all day? Those can be signs of sleep apnoea; only a sleep study can confirm it.

Your sleep tracker knows exactly how you slept.

Trackers are good at spotting sleep but weaker on time awake and sleep stages. Use the score as a rough guide; how you feel in the day matters more.

Daylight saving wrecks your sleep.

A review of 27 studies linked clocks going forward with shorter, poorer sleep for a short while, with night owls hit hardest. It's a short dip, not a wreck.

Sleep paralysis is dangerous.

It's common and usually harmless: you wake before dream-sleep muscle switch-off ends. About one in thirteen people have had it at least once, and it passes.

Spiders dream.

Jumping spiders show a REM-like stage with flickering eyes and twitching legs, but nobody recorded their brains, so whether they dream is unknown.

Bed rotting is a sleep fix.

There's no direct trial. Insomnia research aims to keep bed linked with sleep, so for daytime lounging, a chair or sofa is the better spot.

Eating close to bed always ruins sleep.

Surveys link late eating with more night waking, but a small lab trial found no change in sleep stages. Reflux is the clearer link.

Night-time reflux? Try finishing dinner a few hours before bed.

If you're exhausted, you'll fall asleep easily.

Fatigue (feeling drained) isn't the same as sleepiness (the urge to doze). Writing a to-do list for five minutes helped people fall asleep sooner in one small trial.

ASMR is a sleep switch.

Tingles can feel pleasant for some, but the body signs are mixed and the added sleep benefit is unclear. Use a trigger you enjoy for winding down.