Quick answer: the first night in a new bed is often poor because your brain stays partly on guard in an unfamiliar place. In a 2016 lab study, one side of the brain slept more lightly and reacted more to odd sounds on night one, and that pattern was gone by night two. Unfamiliar light, noise and bedding add to it, and it usually eases quickly.
Quick Fix / Summary
- Expect a rougher first night and plan a gentler next day
- Bring familiar sleep cues: your own pillowcase, an eye mask, earplugs or a white noise source
- Block light and noise in the room as soon as you arrive
- Keep the room cool and keep your usual bedtime and wake time
- Skip demanding tasks the morning after arrival
- If you always sleep better away, look at your bedroom at home
Who This Is For
- You sleep badly the first night in a hotel, rental or relative’s spare room
- You are tired from travel but still lie awake or wake often
- You are staying at a partner’s house or in a new home and not settling
- You have a big trip, wedding or work event and want a plan for the first night
- You notice you sleep better away from home and wonder why
What the First-Night Effect Is
The first-night effect is the trouble many people have sleeping well in an unfamiliar place, even when they are tired. In sleep labs, people often take longer to fall asleep on their first night in a new setting.
A 2016 study gave it a clearer explanation. According to the Brown University news release, the researchers had 35 volunteers in total, across three experiments, sleep two nights in the lab, about a week apart, while measuring brain activity. You can read the details in the author manuscript of the study (Tamaki et al., Current Biology, 2016).
What the Research Found
- One side stayed lighter. On night one, a network of the left hemisphere, part of the so-called default mode network, showed less deep slow-wave activity than the matching network on the right. This was not seen on night two.
- It reacted more to odd sounds. Irregular beeps were played to either ear. Beeps to the right ear, which mostly stimulates the left hemisphere, made people more likely to wake on night one, and they responded faster once awake.
- It tracked with falling asleep. The more uneven the two sides were on night one, the longer it tended to take people to fall asleep.
- Night two looked normal. The left-right differences disappeared on the second night.
The authors suggest that part of the brain may act as a kind of night watch in unfamiliar surroundings, but they describe this as a hypothesis that needs more testing. It is worth keeping the limits in mind: the volunteers were young, healthy adults, the groups were small, and the sleep was in a lab, not a hotel. The researchers also only measured the first stretch of deep sleep, so it is unknown whether the same side stays on watch all night.
Why a New Place Can Still Feel Wrong
Brain vigilance is probably only part of the picture. The Central Queensland University article by Dr Charlotte Gupta and Dayna Easton describes other things that compete with the body’s usual sleep signals, such as the evening drop in core body temperature and rise in melatonin. Unfamiliar light, noise, bedding and late-night activity can disrupt those cues. Travel logistics, homesickness or even excitement can raise arousal and make it harder to switch off.
There is a counterpoint too. The same article notes that being away can remove household distractions and bedtime worry, so some people sleep better away from home, especially if they are short on sleep at the moment.
If the main problem is a racing mind rather than the room, see why your brain will not shut off at night. If you have crossed time zones, the body clock is a separate issue, covered in our guide to jet lag and how to recover faster.
How to Make the First Night Easier
The tips below are common-sense suggestions, not findings from the studies above. None of them has been tested as a cure for the first-night effect.
Before you travel
- Pack things that smell and feel like home, such as your own pillowcase
- Pack an eye mask, earplugs or a small white noise source so you control light and sound
- Keep your normal sleep and wake times in the days before, if you can
- Avoid arriving late and wired: leave time for a calm wind-down
When you arrive
- Check where light and noise will come from and deal with it before bed, using the curtains, a mask or earplugs
- Set the room to the cool end of what is comfortable. Our guide to the best room temperature for sleep explains the usual range
- Request a quiet room away from lifts and ice machines when booking, if the hotel allows it
- Keep your usual bedtime routine, even a shortened one
If you are building a travel kit, our roundups cover the best sleep masks, the best earplugs for sleep, the best white noise machines and the best blackout curtains for home or a longer stay.
The day after
- Go easy on demanding tasks the morning after arriving
- Get outside in daylight and keep your day structured
- Allow a night or two to settle in before judging the place
If You Always Sleep Better Away From Home
Some people notice the reverse: they sleep better in hotels and on holiday. That is not proof of a problem, but it can be a useful clue. Compare your bedroom at home with the place you slept well. Is it cooler, darker or quieter? Do you have a more regular schedule, or fewer worries on your mind? Keeping the bedroom cool and dark, using a comfortable bed, following a wind-down routine and keeping consistent sleep and wake times are sensible places to start.
Common Mistakes to Avoid
- Panicking about one bad night: worrying about it can add to the arousal that keeps you awake
- Booking a packed first day: a lighter day after arrival lets you recover
- Leaving light and noise to chance: sort them out before you get into bed
When to See a Doctor
A poor first night in a new place is common and not a medical problem. Speak to a doctor if:
- Poor sleep carries on well after you have settled in, at home or away
- You snore loudly, gasp or choke in your sleep, or a partner sees you stop breathing
- You are so sleepy during the day that it affects driving or work
- Low mood, intense anxiety or dread about sleep is building
- You find yourself relying on sleep aids regularly to cope
Do not drive if you are drowsy. Our general advice cannot replace a clinician who knows your history.
FAQ
Is the first-night effect real?
Yes. A 2016 study in Current Biology tracked brain activity in 35 young, healthy adults, across three small experiments, over two nights in a sleep lab. On the first night, part of the left side of the brain stayed lighter and more responsive to unusual sounds. That difference was not seen on the second night.
How many nights does it take to sleep normally in a new place?
For many people the effect is mostly a first-night problem. In the lab study the brain pattern was gone by the second night, but real-world sleep varies, so some people need a few nights. Treat it as a short adjustment period rather than a fixed rule.
Why do I sleep worse in a hotel even when I am exhausted?
Tiredness does not switch off the brain’s alertness to unfamiliar surroundings. Strange light, noise, bedding and a changed routine also compete with the body’s usual sleep cues, and travel stress or excitement can add to it.
Does the first-night effect happen at a partner’s house or after moving?
It is plausible, since the trigger appears to be an unfamiliar sleeping place rather than a hotel specifically. The research tested a lab room, so how long it lasts in a new home is not well studied. Most people settle as the space becomes familiar.
What if I always sleep better away from home?
That is worth noticing. Being away can remove household distractions and bedtime worry, and people who are short on sleep at home may sleep better on holiday. It can be a hint to review your bedroom: keep it cool, dark and quiet, and keep regular sleep and wake times.
When should I see a doctor about sleeping badly away from home?
See a doctor if poor sleep carries on after you are settled, if you snore loudly or gasp at night, or if daytime sleepiness affects driving or work. A rough first night alone is not a cause for concern.
Key Takeaways
Sleeping badly the first night in a new place is a documented pattern called the first-night effect. A small 2016 lab study found that one side of the brain stayed lighter and more alert to unusual sounds on night one, and not on night two. Unfamiliar light, noise and routine add to it. Bring familiar cues, control light and noise, keep the room cool, go easy the next day, and see a doctor if poor sleep persists or comes with loud snoring or heavy daytime sleepiness.
About this article
Written by the Sleep Fixes editorial team. We’re not medical professionals. We research each topic against primary sources and hold ourselves to being critical and thorough about what actually makes it onto the site.
This article is part of Sleep Fixes, a site focused on practical, easy-to-follow solutions for common sleep problems like night waking, dry mouth, overheating, and disrupted sleep.
It is not medical advice. If your symptoms are severe, persistent, or worsening, consider consulting a qualified healthcare professional.