Herbie Murray
Fitbit offers a range of tools to help you track your sleep and improve your sleep habits. By wearing your Fitbit device to bed, you can automatically record your sleep data, including your sleep duration, heart rate, and movement. The device uses an accelerometer and optical photoplethysmography (PPG) to measure bodily accelerations of the wrist and blood flow, respectively. This allows Fitbit to determine the different stages of sleep, such as light sleep, deep sleep, and REM sleep, and provide a personalised Sleep Score. Additionally, Fitbit offers features like a monthly analysis of key sleep metrics, snore and noise detection, and the ability to set sleep goals and bedtime reminders. It's important to note that while Fitbit can provide insights into your sleep patterns, it should not be used for medical diagnosis or treatment.
| Characteristics | Values |
|---|---|
| How to track sleep | Wear the Fitbit device during sleep |
| How long must the device be worn for | At least 3 hours |
| How does the device work | Uses a microphone to register noise level and snores |
| How does the device differentiate between sleep stages | Uses movement and heart-rate patterns |
| How accurate is the device | 69% accuracy in a 30-second time window |
| How to adjust sleep sensitivity settings | In the Fitbit app, go to the Sleep Duration tile on the Today tab and tap Edit Sleep |
| How to view sleep stats | In the Fitbit app, go to the Sleep Duration tile on the Today tab |
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What You'll Learn
How to set up sleep tracking on Fitbit
To set up sleep tracking on your Fitbit device, you will need to download the Fitbit app on your phone and pair it with your device via Bluetooth. Once your device is set up, you can start tracking your sleep by wearing it to bed.
To get the most out of the sleep tracking feature, you should set a sleep schedule in the app. You can set a bedtime and a wake-up time target, or both. If you meet your targets, you will receive a star in the sleep schedule graph. If you have fewer than five sleep logs, you can provide an estimate of how much sleep you get on a typical night, and your sleep goal will be set based on this estimate. You can also set a bedtime reminder in the app to help you maintain a consistent sleep schedule.
If you have a Fitbit device that tracks heart rate, you can also view the sleep stages you cycle through, such as light sleep, deep sleep, and REM sleep. This is available on trackers and watches with heart rate tracking. Additionally, you can set a silent alarm to wake up during the optimal stage of sleep.
To edit your sleep data, go to the Sleep Duration tile on the Today tab in the app. Tap the menu icon, then tap Edit Sleep. Choose the sleep session you want to edit, and tap Edit again. You can also delete sleep logs from here.
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How to check your sleep stats on Fitbit
To check your sleep stats on Fitbit, you must first wear your Fitbit device to bed. The Fitbit device automatically detects your sleep when you wear your device to bed. It is recommended that you wear your device in a snug wristband during sleep. Do not wear your device in a clip or pendant accessory. When your body is completely at rest and you haven't moved for about an hour, your device records that you're asleep.
After you wake up in the morning, you can review the information Fitbit has recorded about your sleep. Start the Fitbit app on your phone and wait for it to sync. You can see your overall sleep time on the Today page. This is the time Fitbit believes you were asleep the previous evening, not including any time you were restless or woke up during the night.
The Fitbit Today page displays your total sleep time for the previous evening. Tap the sleep entry to go to the detailed Sleep page. At the top of the page, you'll see a graph that shows how you slept for the last week.
Swipe the graph to see three tabs: how long you slept each night, your sleep schedule (the hours you were asleep), and a summary of your sleep stages. The top of the Sleep page shows how many hours you slept each night. Swipe for different views of the week. Tap any day below the graph to see details about your sleep cycle for that day.
To check your 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. Touch and hold the chart, then drag left or right to check your sleep details.
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How to edit or delete a sleep log on Fitbit
To edit or delete a sleep log in the Fitbit app, follow these steps:
- Go to the "Today" tab in the Fitbit app.
- Tap the "Sleep Duration" tile.
- Tap the three dots icon in the top right corner, and select "Edit Sleep".
- Swipe up to view your sleep sessions and tap on the session you want to edit.
- Make the necessary changes to your sleep log. Note that if you extend your time asleep, you may notice gaps in the sleep stage data for devices that track sleep stages.
- To delete a sleep log, tap on the log you want to delete, then tap the three dots icon and select "Delete Sleep Log" or "Delete Log".
If you accidentally delete a sleep log, you can restore it by following these steps:
- Tap on the Sleep Tile in the Fitbit app.
- Tap the plus (+) sign in the top right corner and select "Add Sleep Log".
- On the next screen, enter the Sleep Start date and time, and the Sleep End date and time (which should match the deleted sleep log).
- Tap "Save" to restore the sleep log.
Please note that if you make significant modifications to a sleep log, the app may not be able to adjust the Sleep Stages, especially if the changes deviate from the original log's schedule. In such cases, it is recommended to revert the log to its original state.
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How to sync your Fitbit device
To track your sleep using a Fitbit device, you must wear the device during sleep. Fitbit devices use your sleeping heart rate, movement, and other data to measure your time spent in each sleep stage and give you a personalised Sleep Score. This is done through the heart rate sensors and motion detectors in the device. The device assumes you are asleep when you don't move for about an hour, and it uses the length of time when your movements indicate sleep behaviour, such as rolling over, to confirm your sleep status.
To sync your Fitbit device, follow these steps:
- Open the Fitbit app on your phone or mobile device.
- From the "Today" tab, tap the "Sleep Duration" tile.
- Tap "Sleeping Heart Rate" to view your stats for your most recent sleep session.
- To check sleep stats for other days, choose the desired week, month, or year using the tabs at the top of the screen.
- Tap on a specific sleep session to view more detailed information, such as your sleeping heart rate for that period.
- To manually sync your device, tap the "Sync" button in the app.
Note that you can also edit or delete sleep logs in the Fitbit app. To do this, go to the Sleep Duration tile on the "Today" tab and tap the menu icon in the top right corner. Then, tap "Edit Sleep", choose the sleep session you want to edit or delete, and follow the on-screen instructions.
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How Fitbit estimates your sleep stages
To use your Fitbit to track your sleep, you must wear your device during sleep. The Fitbit device can then estimate your sleep stages by using your movement and heart-rate patterns. When you don't move for about an hour, your tracker or watch assumes you're asleep. Additional data such as the length of time when your movements indicate sleep behaviour (like rolling over) help confirm your sleep status.
While you sleep, your device tracks the beat-to-beat changes in your heart rate, known as heart rate variability (HRV), which fluctuates as you transition between light sleep, deep sleep, and REM sleep stages. When you sync your device in the morning, it uses your movement and heart rate patterns to estimate your sleep cycles from the previous night.
To check your sleep stats for a particular day, open the Fitbit app and tap the Sleep duration tile on the Today tab. 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. Touch and hold the chart, then drag left or right to check your sleep details.
Your time asleep is calculated by subtracting your time spent awake and restless from your overall tracked sleep time. For example, if you slept 8 hours but woke up twice for 15 minutes each, your time asleep would be 7 hours and 30 minutes. You can also check your daily sleep score for better insight into your sleep quality.
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Frequently asked questions
Wear your Fitbit device during sleep to collect data on your sleep. You can then use the Fitbit app to check your sleep stats. From the Today tab, tap the Sleep duration tile. Tap Sleeping heart rate to find stats for your most recent sleep session.
The Fitbit device uses your movement and heart-rate patterns to estimate your sleep stages. It also uses an accelerometer (an instrument for measuring bodily accelerations of the wrist) coupled with a technique called optical photoplethysmography, or PPG, to measure blood flow.
According to a paper published by Fitbit scientists in 2017, the watch’s sensors can classify sleep stages with 69% accuracy in any given 30-second time window.
