You finish at 7 AM. The world is starting its day exactly as you are trying to end yours. Bins, deliveries, a drill two doors down, and a bedroom full of light that your body reads as a reason to be awake. Night workers sleep 1 to 4 hours less per day than day workers, and roughly a third meet the criteria for shift work disorder. This is not a discipline problem. It is a fight against daylight and noise, and it is winnable with the right setup.

Why Daytime Sleep Is Harder

Three things work against you, and they stack.

  • Your body clock disagrees. Your circadian system is actively promoting wakefulness during the day. You are not just tired and trying to sleep. You are tired and trying to sleep against a system pushing the other way.
  • The world is loud. Daytime is when traffic, deliveries, construction, school runs, and everyone else's life happen. Research on shift workers names street noise, phones, and children playing as the environmental factors that break daytime sleep.
  • Light is everywhere. Light is the strongest signal your body clock receives, and daytime gives you a great deal of it, including on the commute home.

The result is well documented: daytime sleep tends to be lighter, more fragmented, and less restorative than the same number of hours at night. Which means the hours you do get have to be protected harder than a day worker's ever do.

Start With the Commute

This is the step almost everyone skips, and it has some of the best evidence behind it.

Morning light on the way home tells your body clock to start the day, which is precisely the wrong message at 7 AM. Research on circadian adaptation for night workers found that the combination that works is bright light during the shift, darkness on the commute home, and a regular dark sleep period afterwards.

The specific detail is worth having. Very dark sunglasses, the kind transmitting around 2% of light, outperformed ordinary sunglasses at around 15%. If you are going to do this, do it properly. Weak sunglasses are close to doing nothing.

One more finding from the same body of work: once you are using very dark glasses on the commute, adding melatonin did not increase the effect. Fix the light first before you start buying supplements.

Make the Room Properly Dark

Curtains are not enough. Most "blackout" curtains leak at the edges, and the leak is the problem, not the average.

  • Deal with the edges. A blind mounted inside the frame still lets light around it. Fit it outside the recess, overlapping the frame, or add a second layer over the top.
  • Cheap and total beats expensive and partial. Sleep researchers studying shift workers have literally recommended blacking out the window with plastic. It looks terrible. It works.
  • Use an eye mask as well. It handles what the room does not, and it travels with you when you sleep somewhere else.
  • Mind the small lights. Standby LEDs, a charging phone, a smoke alarm. Dim light across a whole sleep period is enough to fragment it.

Then Deal With the Noise

Once the room is dark, noise becomes the limiting factor, and it is a harder problem than light. You can black out a window. You cannot black out a street. If you live on a busy road, the fixes in how to sleep with traffic noise work just as well in daylight.

There is direct evidence here for shift workers specifically. In a study of emergency medicine residents, participants used noise-masking earbuds during their sleep period and rated their own sleep across 28 days, acting as their own controls. On the days they used them, reported sleep quality improved, daytime sleepiness fell, and tension fell. All three reached statistical significance.

Be honest about the size of it. 26 people completed the study, the ratings were self-reported, and the median participant used the earbuds on just 5 of 14 available days. The improvements were around half a point on an 8-point scale. This is a real signal, not a transformation. The most useful detail: the benefit was larger for the people whose sleep was worst to begin with.

Worth noting that the earbuds used in that study were Bose Sleepbuds, which have since been discontinued. We covered what happened and what replaced them in Bose Sleepbuds alternatives.

Choosing Your Sound Cover

Daytime noise is a different problem from night noise. It is more constant, more varied, and more unpredictable, so the approach changes.

  • Run it for the whole sleep period. At night a timer often makes sense. During the day it rarely does, because the noise does not stop when you fall asleep. It gets worse as the morning goes on.
  • Favour the lower end. Traffic rumble, doors, and footsteps sit low in the spectrum. Brown noise matches that better than white. Our comparison is here: brown, white and pink noise.
  • No speech, no music. Podcasts and playlists give your attention something to follow, which is the last thing you want when your body already wants to be awake.
  • Add earplugs for the loud days. Sound cover and earplugs solve different halves of the problem. Earplugs cut high frequencies better than low, so they are good against voices and less good against a bass rumble. Details: is it bad to sleep with earplugs.
  • Accept the trade-off knowingly. All-day sound is not free. A 2026 lab study found continuous pink noise reduced REM, which we unpack in is white noise bad for you. For a shift worker sleeping through a building site, that is usually still the better deal. Keep the volume low and it is a smaller cost.

If your problem is a specific neighbour rather than general daytime noise, the fix is different again: sleeping with noisy neighbours.

Protect the Schedule

The environment is half of it. The timing is the other half. For the switches into and out of a run of nights, see how to switch between night shifts and days off.

  • Sleep soon after you get home. Staying up to have a normal morning means trying to sleep later, when your circadian drive for wakefulness is even stronger. Go more or less straight down.
  • Keep it regular. The same sleep window on every night-shift day is what allows any adaptation to happen at all. Randomising it guarantees you stay misaligned.
  • Split it if you have to. A long sleep after the shift plus a shorter one before the next is a legitimate strategy. Two solid blocks beat one interrupted one.
  • Nap before the shift. A nap before a night shift is the cheapest performance gain available, and it does not cost you daytime sleep.
  • Tell the household. Deliveries, doorbells, and a partner who does not realise you went down at eight are fixable. Put the phone on do not disturb and put a note on the door.
  • Caffeine early in the shift only. It helps at the start and steals from the sleep at the end. Cut it several hours before you plan to go down.

When To Get Help

Some of this needs more than a better bedroom, and we would rather point you at the right door.

  • If sleepiness is affecting your safety. Driving home is where shift work does real damage. If you are nodding at the wheel, that is a conversation with a doctor and with your employer, not a gadget purchase.
  • If it persists when the schedule eases. Shift work disorder is a recognised diagnosis with real treatments. Around a third of night workers meet the criteria, so it is common rather than rare, and worth naming to a GP.
  • If you snore heavily or wake unrefreshed regardless. That points at sleep apnea, which no amount of blackout or audio will touch.

Where the Lullabar Fits

Daytime sleep has one feature night sleep does not: other people in the house are awake. A room speaker playing brown noise for eight hours is a household decision, not a personal one.

The Lullabar is a slim speaker that goes under your pillow. 11mm thick, 47.5 g. The sound travels through the pillow to your ear, so at sleep volume nobody else in the room hears it.

  • It covers the full sleep period. 10+ hours of battery, which is what a daytime sleep block actually needs when a timer is the wrong tool.
  • Nothing in your ears. The earbud studies show sound masking works. They also show people stop wearing them, with median use of 5 days out of 14. Comfort is not a luxury feature here, it is the thing that decides whether you use it at all.
  • It works with an eye mask. No competition for space around your ears, so you can run blackout and sound cover together.
  • 11 nature sounds built in. They play without a phone. Brown noise streams over Bluetooth or loads onto a micro-SD card, so your phone can stay out of the bed on do not disturb.

If you sleep on your back you will want slightly more volume than a side sleeper, since your ear is not resting against the pillow.

Common Questions

"How can I sleep during the day after a night shift?"

Go to bed soon after you get home rather than staying up. Wear very dark sunglasses on the commute, make the room properly dark including the edges of the blind, and run steady low sound for the whole sleep period rather than on a timer. Keep the same sleep window on every shift day.

"How many hours should I sleep after a night shift?"

Aim for the same total you would need at night, which for most adults is 7 to 9 hours. Daytime sleep tends to be lighter and more broken, so you often need to allow more time in bed to get the same amount of sleep. Splitting it into a longer block after the shift and a shorter one before the next is a legitimate approach.

"Do sunglasses after a night shift really help?"

Yes, and the darkness matters. Research on circadian adaptation found sunglasses transmitting around 2% of light worked considerably better than ordinary ones at about 15%. Morning light on the commute tells your body clock to start the day, which is the opposite of what you want. Once you are using very dark glasses, adding melatonin did not improve things further.

"What is the best white noise for daytime sleeping?"

Something low and steady, run for the whole sleep period rather than on a timer. Brown noise suits daytime better than white, because traffic, doors, and footsteps sit at the low end of the spectrum. Avoid speech and music. Keep the volume low, and pair it with earplugs on the worst days.

"Is shift work sleep disorder a real condition?"

Yes. It is a recognised circadian rhythm sleep disorder, and around a third of night workers meet the criteria, with lower rates among rotating shift workers. Night workers also sleep 1 to 4 hours less per day than day workers on average. If it persists or affects your safety driving, it is worth raising with a doctor by name.

The Bottom Line

Sleeping during the day is not the same task as sleeping at night, and the advice written for night sleepers mostly does not transfer. You are working against daylight, a noisier world, and a body clock that wants you up.

Fix it in order. Dark glasses home. A room that is genuinely black, edges included. Steady low sound for the whole block, not a timer. The same window every shift day. Then protect it from the household.

Try the Lullabar for 30 nights and keep your sleep yours while the rest of the house gets on with its day.