Colin Snow
Fitbit devices have become well-known for their ability to track sleep, in addition to their fitness-tracking capabilities. All Fitbit devices can track sleep in terms of duration, and newer models can also track sleep stages and quality through heart rate monitoring. The Fitbit Flex 2, for example, can track sleep through movement alone, while newer models use a heart rate sensor to track the length of time spent in each sleep stage. To track sleep with the Fitbit Flex, simply wear the device to bed, and it will auto-detect your sleep. The data can then be viewed on the Fitbit app, which is available for both Android and iOS.
| Characteristics | Values |
|---|---|
| How to track sleep | Wear the Fitbit Flex tracker to bed |
| How to check sleep stats | Open the Fitbit app and go to the Today tab |
| How to check sleep heart rate | Tap Sleeping heart rate on the Today tab |
| How to check sleep stats for other days | Choose the desired week, month, or year using the tabs |
| How to check sleep details | Touch and hold the chart, then drag left or right |
| How to edit or delete a sleep log | Go to the Sleep Duration tile on the Today tab and tap the menu icon Edit sleep |
| How to exit sleep mode | Tap the Fitbit Flex rapidly for one to two seconds |
| How to check sleep stages | Use a Fitbit with a heart rate monitor |
| How to get a Sleep Profile | Get a Fitbit Premium subscription |
| How to track snores and noise | Wear the Fitbit to sleep and ensure sleep is at least 3 hours long |
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What You'll Learn
How to set up sleep tracking on the Fitbit Flex
To set up sleep tracking on the Fitbit Flex, you simply need to wear the device to bed. The Fitbit Flex will automatically detect when you are asleep and start tracking your sleep. The device will record how long you have been asleep and the quality of your sleep.
If your Fitbit Flex is stuck in sleep mode, you can exit this by tapping your device rapidly for one to two seconds. When you exit sleep mode, your device will vibrate and flash all five LED indicator lights several times, followed by a spinning light pattern.
If you want to access your sleep data, you can do so through the Fitbit app. You can view your sleep duration and sleeping heart rate for your most recent sleep session on the Today tab. To view data from other days, you can choose the desired week, month, or year using the tabs in the app. You can also edit or delete a sleep log by going to the Sleep Duration tile on the "Today" tab and tapping the menu icon.
If you want more detailed insights into your sleep, you can subscribe to Fitbit Premium. This costs $9.99/£7.99 per month or $80/£79.99 per year. With a Fitbit Premium subscription, you can access a Sleep Profile, which provides a more detailed breakdown of your sleep. You can also access personalized insights and recommendations about how to improve your sleep routine.
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How to view sleep data on the Fitbit app
To view your sleep data on the Fitbit app, you must first download the app from the Google Play Store for Android devices or the Apple App Store for iPhones. Once downloaded, open the app on your phone and sync your Fitbit device by turning on Bluetooth.
After a night of sleep with your Fitbit device on, open the app and go to the 'Today' tab, then tap the 'Sleep duration' tile. Here, you will be able to see the sleep data from the previous night, including the total hours and minutes you slept, as well as a 'Sleep Score' to the right of it. At the top of the screen, you will see a graph showing your 'Sleep Score' for the last seven days, as well as a breakdown of the different stages of sleep, including REM, light, and deep sleep.
You can also access more detailed sleep data by tapping the 'Sleep Stages' graph, which will provide insights such as the typical amount of time you should be awake per night and how your time compares, as well as why each stage of sleep is important. At the bottom of the screen, you can access more details about your sleeping heart rate and restlessness, but this requires a paid subscription to Fitbit Premium.
If you have a Fitbit Premium subscription, you will also have access to more advanced features, such as a detailed monthly sleep profile that examines ten metrics, including sleep phases, how often you move, and how much restorative sleep you get. You will also receive personalized insights and recommendations about how to improve your sleep. Additionally, if you have a Versa 3 or Fitbit Sense device, you can access the snore detection feature, which listens for snoring and other noises during the night.
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How to edit and delete sleep logs in the Fitbit app
To track your sleep with Fitbit Flex, simply wear your tracker to bed. When your Flex syncs in the morning, you will see last night's sleep stats on your dashboard. If your tracker is stuck in sleep mode, tap your Flex rapidly for one to two seconds to exit sleep mode. Wrist-based Fitbit devices automatically detect your sleep when you wear your device to bed. Your device records that you are asleep when your body is completely at rest and you haven't moved for about an hour.
To edit or delete a sleep log in the Fitbit app, go to the Sleep Duration tile on the Today tab. At the top right, tap the three dots icon and then Edit Sleep. Swipe up to check your sleep sessions, and tap the session you want to edit. Choose the sleep session, and tap Edit. Tap the log you want to delete, then tap the menu icon. For devices that track sleep stages, extending sleep time may create gaps in the sleep stage data. Choose Delete Sleep Log or Delete Log.
For devices that record sleep patterns instead of sleep stages, you can set your device to track sleep in a normal or sensitive mode. Normal mode: When you make significant movements like rolling over, your device records time spent awake. This setting is appropriate for most users. Sensitive mode: Your device records nearly all movements as time spent restless or awake. This setting may be helpful if you wake up feeling tired even though your sleep history shows sufficient rest.
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How to use the Fitbit Premium subscription to get more detailed sleep insights
Fitbit's Sleep Profile is a feature of the Fitbit Premium subscription that provides a detailed monthly analysis of 10 features that the Fitbit research team has identified as the most important for a comprehensive picture of sleep quality and quantity. These features include sleep schedule variability, sleep start time, time before sound sleep, sleep duration, deep sleep, REM sleep, restorative sleep, and sleep stability.
To access this feature, you must have a Fitbit Premium subscription and use a compatible device, such as the Charge 5, Charge 6, Inspire 2, Inspire 3, Luxe, Pixel Watch series, Sense, Sense 2, Versa 2, Versa 3, or Versa 4. Additionally, you need to wear your Fitbit during sleep for at least 14 days in the previous month, and your sleep logs must include sleep stages data.
With a Fitbit Premium subscription, you can also access the Sleep Animal feature, which assigns you an animal avatar based on your sleep metrics and long-term sleep behaviours. For example, bears tend to have a consistent sleep schedule and fall asleep quickly. To get a Sleep Animal profile, you need to wear your device to bed for 14 nights in a given month.
Another benefit of the Fitbit Premium subscription is the Wellness Report feature, which provides a comprehensive breakdown of your last 30 days of sleep, resting heart rate, weight, and activity data. This report can be downloaded as a PDF, making it easy to share your data with your healthcare provider or specialist.
Furthermore, Fitbit Premium offers Personalised Insights, which help you understand how your sleep quality improves when your exercise increases. The subscription also includes Guided Programs, which are like having a lifestyle coach on your wrist. These programs last 1-3 weeks and provide education, reading, and daily strategies to help you achieve your goals, such as getting more sleep, eating healthily, and moving more.
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How to use the Smart Wake feature to wake up during a light sleep stage
Fitbit devices and Google Pixel Watch series can automatically detect your sleep when you wear your device to bed. To track your sleep with Fitbit Flex, simply wear your tracker to bed. When your Flex syncs in the morning, you will see last night's sleep stats on your dashboard.
The Smart Wake feature on Fitbit works in conjunction with alarms to wake you up during a light sleep stage. It works backward from 30 minutes before the alarm time you set. During this time, it will determine the best time to wake you up. If there is no good time, it will revert to the time you originally set.
To set up the Smart Wake feature, you need to select a new alarm and choose a time to be woken up. The next screen will display the selected time and the options on/off. Scroll down and you will see the smart wake option. You can also adjust the sensitivity of the smart alarm. With less sensitivity, you need more noticeable movement to trigger the alarm.
The Smart Wake feature is currently available on Charge 3 and 4, Inspire HR, Ionic, the Versa family, and all the newer Fitbit-branded fitness trackers and smartwatches.
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Frequently asked questions
Simply wear your tracker to bed. When your Fitbit syncs in the morning, you'll see last night's sleep stats on your dashboard.
Open the Fitbit app and tap the Sleep duration tile. Tap Sleeping heart rate to find stats for your most recent sleep session. To check sleep stats for other days, choose the desired week, month, or year using the tabs. Tap on a specific sleep session to check your sleeping heart rate for that period.
Go to the Sleep Duration tile on the Today tab. Tap the menu icon in the top right corner and select Edit sleep. Choose the sleep session and tap Edit. Tap the log you want to delete, then tap the menu icon again. Choose Delete Sleep Log or Delete Log.
Wear your Fitbit moderately snug and higher on your wrist (toward your elbow) for the most accurate readings.
When your body is completely at rest and you haven't moved for about an hour, your device records that you're asleep.
