Is segmented sleep healthy? How it works and what to expect
Clinically reviewed by Dr. Chris Mosunic, PhD, RD, MBA
There is more than one way to get a good night's sleep. Learn what segmented sleep is, why some people swear by it, and 9 tips for exploring it mindfully.
If you tend to wake up at 2am, then toss and turn for two hours, before finally giving up and just getting up for the day, you are one of many.
So many people wrestle with insomnia or interrupted sleep, and it can make you think that there’s something wrong with you. But maybe that’s not the case. Maybe that’s just the way you were built, and it’s time to stop fighting what’s most natural for you and rolling with it instead.
Enter: segmented sleep, a type of sleep that’s actually centuries old, and could be the answer to your problems.
Apparently, it wasn’t uncommon in history for people to split their sleep into two distinct rounds. Nowadays, this sleep style is growing more popular and it might be because it offers more flexibility and takes the pressure off of people thinking they need eight uninterrupted hours. If this sounds appealing to you, let’s explore a different way to rest.
What is segmented sleep?
Segmented sleep, also called biphasic sleep, is the practice of dividing your rest into two separate periods instead of one long stretch. It refers to two sleep blocks separated by a natural window of wakefulness, most famously the historical "first sleep" and "second sleep" pattern.
Historically, segmented sleep was entirely normal. In the past, people commonly had a “first sleep” after dusk, woke for an hour or two around midnight, then returned for a “second sleep” until morning. During that quiet middle window, they might read, stoke the fire, reflect, or even socialize.
Today, this type of sleep is making a comeback because many people are realizing that their bodies are just different. They sleep better in smaller chunks and that’s completely okay.
Segmented sleep vs. polyphasic sleep: what's the difference?
Segmented sleep and polyphasic sleep get used interchangeably, but they aren't the same thing. Polyphasic sleep is the umbrella term for any schedule that splits rest into more than one period. Segmented sleep is one specific type of polyphasic pattern: the two-period kind.
The simplest way to picture it: segmented sleep is the gentlest, most historically rooted branch of the polyphasic family, while schedules like Uberman and Everyman sit at the more demanding end.
Read more: Polyphasic sleep: what it is, and possible benefits & risks
Why do people choose segmented sleep?
Most people who choose segmented sleep are drawn to the two-period rhythm on purpose, not because their nights are simply broken up. Here are three common reasons.
It mirrors a natural, historical pattern: For centuries, two sleeps with a wakeful gap was ordinary. Some people find their bodies settle into that rhythm when they stop forcing one long block.
The middle-of-the-night window feels restorative: That in-between space can become a calm time for meditation, reading, or stillness rather than a stretch of frustrated tossing and turning.
It removes the pressure to sleep perfectly: For many, waking up at 2am is part of their rhythm. A two-period approach lets them honor that and shift the story from "I can't sleep" to "This is how I sleep."
Is segmented sleep healthy? Pros and cons to consider
While modern sleep science has largely been centered on consolidated sleep, research is starting to acknowledge that alternative rhythms like segmented sleep might be just as healthy.
With that said—like any sleep pattern—segmented sleep does come with potential upsides and downsides.
The potential upsides
Less pressure: One of the biggest emotional wins of segmented sleep is psychological. If you stop viewing 3am wakeups as bad, you reduce the anxiety that can spiral into insomnia.
More reflection and creativity: That calm, quiet space in the middle of the night can be the best time to journal, read, or even just sit in silence.
Greater flexibility: If your life doesn't fit a 9–5 mold, two sleep blocks give you more room to work with than one fixed stretch. You can shift when each block starts to match your evenings and mornings.
Historical validation: Knowing that segmented sleep has deep roots in human history can help take the edge off.
The potential downsides
Social and work conflicts: If you live with a partner who sleeps differently or work a job that demands rigid hours, segmented sleep can clash with those responsibilities.
It may not work for everyone: Some people feel disoriented when their sleep is fragmented. You may also find it hard to fall back asleep after waking in the middle of the night.
Harder to achieve deep sleep: You could get less deep and REM sleep, both of which are crucial for recovery and memory. This is more of a concern if your total sleep time drops below what your body needs.
It requires self-awareness: Segmented sleep isn’t a set it and forget it solution. It usually takes trial, error, and a lot of tuning in to see if it’s actually working.
How to experiment with segmented sleep: 9 tips to try it out
If you struggle with getting a full night’s rest, segmented sleep might be just the thing to help you take the pressure off sleeping. Here are nine doable ways you can improve your sleep quality.
1. Track your natural rhythms before making changes
Segmented sleep usually works best when you align with patterns your body naturally wants. Spend a week noticing when you naturally feel sleepy and when you tend to wake up.
Keep a simple sleep log. This can help you find out if you’re always waking up around the same time at night or if there’s usually a point in the afternoon when you crash.
Pay special attention to whether you wake at a consistent time in the small hours. That natural wake point is where your two sleep blocks want to divide.
Read more: How to beat the afternoon slump in 8 ways (without coffee)
2. Redefine the “middle of the night”
When you wake between your first and second sleep, resist the urge to force yourself back down right away. Instead, see it as part of your sleep. This shift in mindset alone can reduce stress.
During this wakeful window, do something calm. You could read a book, journal your intentions, or listen to a soothing meditation.
💙 Meander through the British country by listening to A Woodland Stroll to Sleep with Prof. Megan Reitz.
3. Keep light low and vibes soft
Light can tell your brain it’s time to be awake. During your waking window, avoid overhead lights and screens. Instead use dim lighting like a salt lamp or low-wattage bulb.
Also if you have to look at your phone, use night mode and keep brightness down.
4. Try planning your two sleep blocks around the historical pattern
Segmented sleep works best with two clear blocks and a wakeful window between them. A close match to the traditional rhythm is a first sleep of about 3 to 4 hours starting a couple of hours after dark (roughly 9pm to 1am), a wakeful gap of one to two hours, then a second sleep of 3 to 4 hours starting around 2am to 3am.
Aim for 7 to 9 hours of sleep across both blocks so your total rest stays where your body needs it. The exact clock times can flex to fit your life, but keep the two-block shape and hold your schedule steady for at least a week to see how you respond.
5. Anchor your rhythm with routines
Start and end each sleep block with gentle rituals that cue your body for rest. You could drink lavender tea, read something familiar, or do breathwork, like these 10 types of breathing exercises.
It could also be as simple as mindfully washing your face and brushing your teeth for two minutes.
Because you're settling your body twice in one night, a short, repeatable ritual at the start of each block matters more here than in a single-sleep routine. Use the same cue both times so your body learns the pattern.
6. Use the day to support your night
Segmented sleep still benefits from solid daytime habits. Some good habits to add into your schedule are avoiding caffeine after 2pm and moving your body, even if it’s just a short walk.
7. Make the wake window work for you
Treat your waking window not as insomnia, but as an intentional pause. If you feel pressure to be productive, it defeats the purpose.
If you do get anxious, write down your worries in a notebook and put it away.
Read more: 20 affirmations for anxiety relief (and how to use them)
8. Protect your energy during the day
A two-period schedule still asks your body to adjust, so support it with rest when you can. A 20-minute power nap or even five minutes of mindful breathing in the afternoon can top up your energy without cutting into either sleep block.
💙 Take a power nap by listening to the sleep story A Very Proper Tea Party with Dame Mary Berry
9. Reassess regularly
After a couple weeks, ask yourself if you’re feeling more or less rested overall and if you feel less anxious about sleep. If you’re feeling more stable and more rested, keep going.
But if it starts to feel like one more thing to manage, it might not be the right fit, and that’s okay.
Segmented sleep FAQs
Why do people choose segmented sleep?
People turn to segmented sleep because a single long block of rest doesn't feel natural to them. Some find their body wants to wake in the small hours no matter what, so they build the night around two sleeps instead of fighting the gap. Others are drawn to the historical first-sleep, second-sleep rhythm and want a calmer relationship with the middle of the night.
How do I know if segmented sleep is right for me?
A good place to start is by asking yourself how your current sleep routine is serving you. If you regularly wake up in the night or find yourself dreading bedtime, segmented sleep might be right for you.
This style of sleep could give you some breathing room. But try to experiment with it when you’re not under extreme stress, so you can really tune in to how your body responds.
What are some downsides of segmented sleep?
The biggest challenge is that it doesn’t always mesh well with the rest of the world. If you have a 9–5 job or limited opportunities to rest during the day, building a segmented routine can feel really tough.
There’s also an adjustment period where your body might feel disoriented at first, especially if your second sleep segment gets cut short. Additionally for some people, waking up in the middle of the night ends up being more stressful than restful. That’s why it’s good to approach this with curiosity and not a rigid goal.
Can segmented sleep help with insomnia?
Segmented sleep can help with insomnia. In fact, one of the hardest parts of insomnia is the pressure to fall asleep fast and stay that way. But segmented sleep challenges that narrative by reframing wakefulness as a natural part of the night.
This shift alone can reduce anxiety and make it easier to relax. If you regularly wake up at night and panic about being awake, segmented sleep can help you build a gentler relationship with rest.
How long does it take to adjust to segmented sleep?
Most people need around one to two weeks to settle into a segmented sleep rhythm. During this adjustment period, you might feel more tired, but this is normal. Your body is just learning a new pattern.
If after a few weeks you feel more rested and less anxious about sleep, you’re most likely on the right track. With that said, if it still feels off, that’s okay too. Not every experiment sticks.
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