Herbie Murray
Fitbit devices are designed to track your sleep and other activities. However, some users have reported that their Fitbit records steps while they are asleep, which can be frustrating if you are trying to accurately track your sleep. This issue could be due to the device's sensitivity settings or other factors such as the placement of the device on the body. While there are some workarounds suggested by the Fitbit community, these only address the removal of the steps from the data after the fact, rather than preventing the issue from occurring.
| Characteristics | Values |
|---|---|
| Fitbit tracking steps during sleep | Tracking steps during sleep is a limitation of how Fitbit devices work, using movement to detect steps. |
| Fitbit device placement | Fitbits should be worn on the wrist for optimal sleep tracking. |
| Fitbit device fit | The device should be worn snugly to ensure accurate sleep tracking. |
| Fitbit sleep sensitivity settings | Users can adjust the sleep sensitivity settings to "Normal" or "Sensitive" to reduce the number of steps recorded during sleep. |
| Alternative solutions | Users can use external apps such as "Drivebit" or "Travelbit" to mitigate the issue. |
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What You'll Learn
Fitbit sleep tracking limitations
While Fitbit devices are designed to track sleep, there are some limitations to their accuracy. Fitbits use movement to detect steps, and any movement during sleep can be recorded as steps. This is a limitation of how these devices work, and while it may be frustrating to see extra steps counted during sleep, it is often insignificant in the bigger picture.
One way to reduce the number of steps recorded during sleep is to adjust the sleep sensitivity settings on the Fitbit device. The sensitivity settings can be changed to "Normal" or "Sensitive", which can help the device distinguish between movement while asleep and movement while awake. However, it is important to note that even with these adjustments, the device may still record some steps during sleep.
Additionally, Fitbit devices rely on being worn correctly to accurately track sleep. It is recommended to wear the device snugly on the wrist, as this allows the device to stay close to the pulse points and better measure heart rate and skin temperature. Wearing the device in a pocket or on a clip is not an accurate way to measure sleep. Ensuring the device is positioned correctly and that the software is up to date can also improve sleep tracking accuracy.
While Fitbit devices can provide insights into sleep patterns, they are not perfect and may not always accurately track sleep. Similar to how a pedometer may miss steps or an activity tracker may not recognize a workout, sleep trackers can fail to properly record data. It is important to remember that Fitbits are not intended to diagnose or treat medical conditions and should not be solely relied on for medical purposes. For specific health concerns, it is recommended to consult a healthcare professional.
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Changing sleep sensitivity settings
Your Fitbit device will automatically detect your sleep when you wear it to bed. When your body is completely at rest and you haven't moved for about an hour, your device records that you're asleep. If your device detects excessive movement, it records this time as you being awake.
If you find that your Fitbit is tracking steps in your sleep, it is likely due to you moving around in your sleep. If you wish to change your sleep sensitivity settings, you can do so by following these steps:
- Open the Fitbit app.
- From the 'Today' tab, 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.
- Touch and hold the chart, then drag left or right to check your sleep details.
- To change your sleep sensitivity setting, go to 'Settings' in the drop-down menu.
- You will find the sleep sensitivity option near the bottom of the 'Advanced Settings'.
- Change the setting from 'Normal' to 'Sensitive' or vice versa.
The 'Normal' setting will record significant movements, such as rolling over, as time spent awake. The 'Sensitive' setting will record even slight 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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Workarounds to prevent step tracking
There are a few workarounds you can try to prevent your Fitbit from tracking steps while you sleep. Firstly, it is recommended that you restart your tracker by pressing the left and lower right buttons for 10-15 seconds until your tracker restarts. After that, access your device settings and scroll down to Sleep Tracking. Here, you can adjust the sensitivity of your tracker to movements by changing it from Sensitive to Normal or vice versa. This may help to reduce the number of steps recorded while you sleep.
Another workaround is to delete the recorded steps by logging a "Driving" or "Travel" activity for the same duration. This will remove the steps from your daily total, but it may affect your sleep data. As one user points out, the steps recorded during sleep are usually negligible in the bigger picture, and there will be times when your Fitbit undercounts steps, so it tends to balance out.
You could also try adjusting the position of your Fitbit. Ensure it is worn snugly on your wrist, about 2-3 finger widths above the wrist bone. This position is recommended for accurate sleep tracking and may help reduce the number of steps recorded.
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Fitbit sleep tracking accuracy
Fitbit sleep trackers have gained immense popularity as a way to monitor sleep. They provide information regarding the quality and duration of sleep, helping users make informed decisions about their sleep habits. However, there are limitations to their accuracy and reliability.
Fitbit sleep tracking relies on motion tracking and heart rate monitoring. Motion tracking uses accelerometers to detect movement during sleep. When in a deep sleep, people generally move less, while in REM sleep and lighter sleep stages, they tend to move more. Heart rate monitoring is used to estimate periods of wakefulness. Fitbit also uses machine learning to analyse movement and heart rate data.
However, motion tracking can lead to misinterpretations. Fitbit might interpret periods of restless sleep as wakefulness or classify periods of wakefulness when the wearer is not moving as sleep. Heart rate variability is another issue, as heart rate can vary significantly, even during sleep. For example, heart rate is likely to be higher after exercising, eating a large meal, or drinking alcohol before bed. As a result, Fitbit's heart rate sensors may struggle to accurately identify sleep stages.
Research has shown that Fitbit sleep trackers tend to overestimate total sleep time by about 10% and underestimate deep sleep and REM sleep by about 20% each. As deep and REM sleep are crucial for recovery and memory consolidation, this means Fitbit may indicate that sleep quality is worse than it is. It may also fail to register any positive changes made to improve sleep quality.
Despite these limitations, some users have found Fitbit sleep tracking valuable in providing feedback to adjust their sleep schedules and get more rest. Fitbit's accuracy could be improved by better communicating its limitations to users and incorporating factors such as room temperature, noise, and disturbances from partners or pets, which can affect sleep quality.
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Fitbit sleep tracking alternatives
If your Fitbit is tracking steps while you sleep, it is likely due to the device's movement on your wrist as you toss and turn. Unfortunately, there is not much you can do to prevent this, other than removing the device, which is not advisable as it will affect your sleep tracking data.
Now, if you are looking for alternatives to the Fitbit for sleep tracking, there are a few options available. Here are some suggestions:
Oura Ring
The Oura Ring is a popular alternative to the Fitbit. It is a wearable tracker that collects a wide range of data about your body and sleep. It offers accessible data, useful guidance, and comfort. The Oura Ring integrates with the fitness-tracking app Strava, but the integration is not seamless. The ring costs $300 to $550, and you need to sign up for a monthly subscription to access most of the data and recommendations.
Whoop Strap 4.0
The Whoop Strap 4.0 is another excellent sleep tracker that provides accurate and consistent tracking. It offers multiple wearing options, a long battery life, and an easy-to-use app. The Whoop Strap tracks various data points, including REM stages, efficiency, heart rate, and respiratory rate, and presents the information in a user-friendly manner. The first month is free for CNN Underscored readers.
Apple Watch Series 8
The Apple Watch Series 8 offers seamless integration with other Apple devices and is intuitive to use. However, testers found it uncomfortable to wear while sleeping, and it did not always accurately measure sleep duration. At $420, it may not be the best choice solely for sleep tracking.
Garmin Watches
Garmin offers several watches that include sleep tracking features, such as the Forerunner 265S and the Venu Sq 2. These watches provide accurate sleep tracking, with deep sleep detection accuracy of up to 80-90%. While the breakdown of sleep stages may differ from Fitbit, they can accurately detect the amount of light sleep, which is especially useful for those with chronic illnesses. However, the Venu Sq 2 may not be the most comfortable option for sleep tracking.
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Frequently asked questions
Your Fitbit tracks steps in your sleep due to your movement while sleeping.
You can change the sensitivity of your tracker. You can also try logging that period as "driving" to remove the steps, but this may mess up the sleep period.
First, restart your tracker by pressing the left and lower right buttons for 10-15 seconds. Then, go to your device settings and scroll down to the Sleep Tracking section. Here, you can adjust the sensitivity to movements.
Your Fitbit may fail to track your sleep at all. This may be due to a recent update, or because you have tattoos around your wrists.
Ensure your Fitbit is worn snugly on your wrist, positioned 2-3 finger widths above the wrist bone. Make sure you are running the latest version of the Fitbit app, and that your Sleep Sensitivity settings are optimised.
