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How Does Your Fitbit Track Sleep

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How Do I Track My Sleep With My Fitbit Device

How To Track Sleep With A Fitbit One (Tutorial)

Track your sleep in the Fitbit app to better understand your sleep patterns and quality.

All wrist-based Fitbit devices automatically detect your sleep when you wear your device to bed. We recommend wearing your device in a snug wristband while sleeping dont wear your device in a clip or pendant accessory.

When your body is completely at rest and you havent moved for about an hour, your Fitbit device records that youre asleep.

If your device doesnt track heart rate, you see your sleep pattern in the Fitbit app. Your sleep pattern includes your time spent awake, restless, and asleep. Restless sleep indicates that you moved in your sleep, like tossing and turning. If your device detects excessive movementenough that restful sleep would not be possibleyour device records time spent awake.

Fitbit devices that track heart rate also track sleep stages. For more information, see What should I know about Fitbit sleep stages?

Set a sleep schedule in the Fitbit app to help you meet your sleep goal and maintain consistent sleep patterns. You can set either a bedtime or a wake-up time target, or set both targets.

How To Track Your Sleep Using Fitbit

Sleep is necessary for us to be healthy. When we are asleep, the brain processes the information accumulated throughout the day and forms new connections. As for the rest of the body, it relaxes and uses the hours in which we lie down to rejuvenate. In truth, sleep is beneficial for both mental and physical health, that is why sometimes it may help for you to do some sleep tracking. This will stop you from guessing how long you slept and help you actually meet your goals.

In modern society, the lack of sleep has become a common occurrence. We often sacrifice sleep either for personal or professional reasons, without being aware of the fact that sleep deprivation increases the risk of obesity, heart disease and depression.

Keeping track of our sleep, in terms of quality and quantity, can be helpful in identifying whether we suffer from sleep deprivation or not. Fitbit, a popular activity tracker, can be used to detect sleep and obtain information on how well we are actually doing in this area. Below we will discuss how Fitbit works, and how CareClinic helps import your sleep data and discover correlations between your overall health and sleep.

Sleep statistics demonstrate that sleep deprivation is a real issue


  • Why should you consider tracking your sleep?
  • Love Wearing Your Fitbit In A Clip

    If you prefer to wear your Fitbit in a clip during the day, make sure you place your Fitbit on your wrist and change its setting to on-wrist to capture sleep data when you prepare for bedtime.

    If you dont care about your sleep stage information, then you can continue to wear your Fitbit on a clip throughout the day and night.

    Just remember that your sleep information will only include time spent asleep, awake, and restless.

    Recommended Reading: Does The Garmin Vivofit 4 Track Sleep

    What To Do If The Fitbit Is Not Tracking Sleep

    Time needed: 15 minutes.

    These are the troubleshooting steps to utilize if the device on your wrist is not doing its job properly. Sometimes you might wake up in the morning and find that only half of your sleep session was recorded. Or the tracker might say you only had 2 hours of kip time when in reality youve had a good 8 hours. Or perhaps your sleep stages are not showing. Something has gone wrong and the Fitbit has not done what it is supposed to. It makes that nights data pretty useless.Incomplete data is a more common problem than not tracking sleep entirely, and it can affect any Fitbit. It doesnt matter if its the recent crop such as Sense, Versa 3 or an older device. It happens on occasion. A good example is the Fitbit Inspire 2. At the start of this year many users were complaining that the device would not track sleep at all. We wrote a piece at the time on how to resolve. This was a major issue at the time.

  • Reboot your wearable

    First off, you should always try turning the wearable on and off i.e. a soft restart. That reboots your device but keeps all you data on it. Think of it like switching a desktop computer on and off. This simple thing can resolve many problems and is something definitely worth trying out.If youre not sure how to do this, check out our guide on how to reset your Fitbit fitness tracker or smartwatch.

  • How Does Fitbit Estimate How Much Sleep I Need

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    If you have 5 or more sleep logs, your sleep goal is estimated based on an average of these logs. Your wake-up time target is estimated based on the time you typically wake up each day, and your bedtime target defaults to the time you should go to sleep in order to meet your sleep goal.

    If you have fewer than 5 sleep logs, you can provide an estimate of how much sleep you get on a typical night, and your sleep goal is set based on this estimate. You must manually set your bedtime and wake-up time targets.

    Read Also: Can Lack Of Iron Cause Insomnia

    Data Extraction And Items

    The following items were extracted in a systematic manner by one author and checked for accuracy by another author : first author year of publication type of sleep tracker and comparator number, sex, type, and age of participants study site number of nights of sleep assessment bedtime Fitbit mode setting anatomical placement of tracker and study outcomes relative to the denoted reference standardthe precision of measuring the parameters of total sleep time , sleep onset latency , wake after sleep onset , and sleep efficiency , as well as the sensitivity, specificity, and accuracy of detecting both sleep epochs and sleep stages.

    The Mechanism Behind Fitbit Sleep Tracking

    Clinical experts use Electroencephalogram to study the electrical activity of the brain to determine the sleep pattern. Some researchers use Polysomnography or PSG to understand sleep behavior in a lab. These two methods are considered to be the gold standard for measuring sleep stages.

    Fitbit does not have any of these hi-tech devices built into it. It rather uses a combination of your movement and heart rate to figure out whether you are sleeping, how much you are sleeping or if not sleeping at all.

    Lets get started with the movement monitoring. Fitbit utilizes a three-dimensional accelerometer to track your muscle movement. If you dont move for an hour while having the tracker on your wrist, it automatically assumes that you are asleep.

    To measure the quality of your sleep or how rested you are, the accelerometer measures the length and direction of every single movement, including eye movement. For example, if you are rolling over too much or having rapid eye movement, Fitbit will consider you awake, which makes total sense.

    To estimate different sleep stages, Fitbits built-in Heart Tracker measures your Heart Rate Variability . It is a science-y term for the minor fluctuations in your heartbeat during different stages of sleep. By tracking beat-to-beat changes in your heart rate, Fitbit determines how much time you spent in each stage and how close you were to your sleeping goal.

    Also Check: Can Nasal Strips Help Sleep Apnea

    Correlation Between Sleep Parameters Assessed By Fitbit Versus Sleep Diary

    A total of 3 studies investigated the extent of correlation between sleep parameters derived by a nonsleep-staging Fitbit model and a self-rated sleep diary 1 of them involved two different Fitbit models . In the total of four potential comparisons , significant correlation, ranging between r=.55 and r=.71, was reported between TST measured by Fitbit versus sleep diary. A total of 1 study found significant correlation between the two methods of sleep assessment for time in bed but poor correlation for WASO and SE . A total of 1 study investigated the extent of agreement between the sleep diary and sleep-staging Fitbit methods. It reported significant overestimation of WASO and underestimation of SOL , TST , and SE by Fitbit in comparison to the sleep diary.

    Where To See Your Readings

    Fitbit: How To Use Sleep Tools

    To see your specific sleep results, you log in to the Fitbit app on your iOS or Android device and sync your Fitbit. The app that tracks your sleep is the same one you use to see your steps. When you do, youll see a brief rundown of your results in the sleep tile.

    You need to have slept at least three hours for Sleep Stages to work. It also doesnt work if you wear your tracker loose on your wrist or when its running low on battery power.

    If you want to see your readings, tap on the sleep time number to go to the sleep dashboard. From there, you can see each stage of sleep represented in a graph form that breaks down how much time you spent in each sleep stage and how close you were to your overall sleep goal for the day.

    Scroll down to see your sleep results for the day and your average amount of sleep for the week. Tap on any specific sleep section to bring up an hour-by-hour explanation of how you slept and which sleep stage you were in at a given time. The 30-day average and benchmarks show how your sleep compares to other people your gender and age.

    Read Also: How Does Fitbit Flex Track Sleep

    Sleep More Soundly With Fitbit Sleep Tools Like The New Snore & Noise Detect Feature

    We know how important it is to get a good nights sleepit can affect your mood, curb food cravings, ward off sickness, help improve your athletic performance, and so much more. But did you know that having good sleep hygieneor putting in place habits that help you get a restful nights sleepand your sleep environment can have a significant impact on whether or not you get those doctor-recommended 8 hours?

    With Fitbits advanced sleep tools, you can understand your sleep quality, form better sleep hygiene, and make the most of your day by improving your night. Keep reading to find out more.

    Sleep Is Automatically Detected By Fitbit

    How does sleep monitoring watch detect deep sleep? Well, the Fitbit device, as it is simply worn on the wrist, it will automatically detect sleep. You just have to wear it in bed and it will identify each sleep phase, in accordance with your movements.

    If you were still for approximately one hour, the device automatically considers that you have fallen asleep. Depending on each Fitbit, it might also track movements that are suggestive of sleep, such as turning on the other side. In the morning, when you will resume normal activities, it will track the awake state.

    It is possible that sleep is recorded by the Fitbit device, even when this is not actually happening. This is valid for the cases in which you lie down without falling asleep but you are not moving, making the device think that you are sleeping. In this situation, you can go to the history and delete the recording in question.

    Use Fitbit to set sleep goals and improve your sleep schedule

    You can trust apps such as the one that comes with Fitbit to set sleep goals and improve your sleep schedule. The app is available on both iOS and Android, and it can make a genuine difference whereas sleep hygiene is concerned. Thanks to modern technology, you can now set and follow a regular sleep schedule, so that you feel better overall.

    Sleep insights for Fitbit users

    Using Fitbit to go to bed at the right time

    Recommended Reading: Vivosmart Hr Sleep Tracking

    Sleep Stages: What Are They

    Your body goes through several sleep stages each night while you sleep. Each one lasts about 90 minutes before you cycle through to the next one. During each stage of the sleep cycle you alternate between deep sleep and light sleep.

    When you arent in Rapid Eye Movement sleep, youll alternate between the two Non-Rapid Eye Movement stages. You spend more time in deep sleep during the beginning of the night.

    When you enter into REM sleep, you experience vivid dreams . The amount of time you spend in REM sleep typically increases as the night goes on. Earlier in the night your REM stages are brief, but when you get closer to waking up youll spend a lot more time in the vivid dreaming stage of sleep.

    The Sleep Tracking Reinforces A Bedtime Routine

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    I found the Charge 5s sleep tracking and features to be accurate and useful for improving my sleep cycle. It tracks interesting data like the time spent in your sleep phases , your heart rate, and estimated oxygen variation . You can also answer a few questions for Fitbit about how much sleep you want to get and what time you like to wake up in the morning, and it will set a goal bedtime for you and send you reminders when it’s time to start winding down at night.

    But my favorite sleep feature is the smart wake” alarm, which signals your Fitbit to vibrate half an hour before your alarm is set to go off to gently wake you up. As a night owl and a deep sleeper, I found this feature effectively roused me and made for a much more pleasant awakening than a traditional alarm clockit would be especially useful for people who have to get up at a different time than their sleep partner.

    Read Also: How To Win Sleep Apnea Va Claim

    Your Heart Rate Is The Key To Smarter Sleep Stages Heres Why

    If youve been using a Fitbit tracker to monitor your sleep, then you know how important movement is to signaling when you fall asleep, wake up, or stir. But in order to determine your sleep stageshow long you spend in light, deep, and Rapid Eye Movement sleepmovement alone is not enough.

    During sleep studies, most sleep stages are scored based on brain waves, says Michael Grandner, MD, director of the Sleep and Health Research Program at the University of Arizona in Tucson and a Fitbit sleep consultant. Except during REM sleep when doctors are also looking for eye movements and a lack of muscle activity.

    In other words, you cant determine light or deep sleep based on movement alone. You need another signal, says Grandner. You need something else that is going on in the body that differentiates REM from other stages of sleep.

    So whats that second signal? Heres a hint: Its something many Fitbit trackers can already trackheart rate!

    How To Make Fitbit Track Sleeping Work

    Surge/Charge HR/Force and Charge

    Surge helps track sleep automatically. All you need to do is to wear your device to bed. You will be able to view your stats when the tracker syncs with your account.


    After getting into bed, tap you Flex for about 2 seconds. The tracker will vibrate and display 2 slowly dimming lights as an indicator for sleep mode. Goal progress is not displayed while the device is in this mode.

    After you wake up, tap your Flex rapidly for about 2 seconds. The device will exit sleep mode. When you do this, the Flex will flash and vibrate 3 times and then display a spinning light pattern. You can view your stats after Flex has synced with your Fitbit account.


    To activate sleep tracking, hold the button on the tracker for several seconds. You will notice the stopwatch begin to count or the icons start to blink. This is an indication that the device is in sleep mode. After you wake up, hold the trackers button for about 2 seconds to exit sleep mode.

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    What Is Fitbit Sleep Score

    What do the numbers mean, and what is Fitbit Sleep Score exactly? It is a feature designed to give you a detailed look into your sleeping patterns and help you develop healthier habits. You will find it on your Fitbit smartphone app in the sleep widget on the home screen. For it to work, of course, you need to wear your Fitbit tracker to sleep. Once you have done that, the app will generate a report soon after you wake up, usually a couple of minutes later.

    You will find how long you slept, how much time you were awake, and how much time you spent in each sleep stage: REM, light, and deep. Your overall score is calculated based on all of these metrics. These are the typical ranges:

    • Excellent: 90 to 100
    • Fair: 60 to 79
    • Poor: less than 60

    Dont be alarmed if you dont typically reach a score of 90 or above. According to Fitbit, most users on average score between 72 and 83. Also, a score might not be generated every time. This can occur if your tracker was put on too loosely or in a position that prevented consistent heart rate readings.

    Related:Why youll want to take fitness tracker accuracy with a grain of salt

    What Is Estimated Oxygen Variation

    Fitbit Alta – Sleep Tracking Features – FEATURE REVIEW

    A reading of the oxygen levels in your blood, it uses a red LED in the optical heart rate monitor.

    Fitbit’s detection is a little different. Rather than spitting out a single percentage score it examines the difference in the highs and lows of your blood oxygen, and looks to highlight potential underlying conditions.

    However, that would require you checking and understanding the data.

    Fitbit has been packing SpO2 sensors into some of its wearables, so if you have a Charge 3, Fitbit Ionic or any Versa smartwatch you’re good to go.

    Users of Inspire or Alta trackers don’t have the hardware inside, so won’t get the update.

    The new feature has been rolling out pretty fast, starting in the US and we’ve already had our devices updated.

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