Ashwin Lewis
Fitbit devices are designed to be worn during sleep to track sleep patterns and sleep stages. The sleep log includes the time spent asleep, restless, and awake. The restless category indicates that the user has moved in their sleep, such as tossing and turning. The Fitbit device records time spent awake if it detects excessive movement, enough to disrupt sleep. Fitbit devices that track heart rate can also track sleep stages, including light sleep, deep sleep, and REM sleep. The sleep stages feature uses accelerometer data, heart rate variability, and algorithms to identify trends in restlessness.
| Characteristics | Values |
|---|---|
| What it means | Restless sleep indicates that you move in your sleep, like if you toss and turn. |
| How it is tracked | Fitbit devices track restlessness by monitoring movement and heart-rate patterns. |
| How it affects sleep score | Spending more time restless lowers your sleep score. |
| How to improve | Fitbit Premium offers guided sleep programs to help users get more restful sleep. |
Explore related products
What You'll Learn
How Fitbit tracks sleep
Fitbit uses movement and heart-rate patterns to estimate sleep cycles. 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 of movements that are indicative of sleep behaviour (like rolling over), can also help confirm that you're asleep. While you sleep, your device tracks the beat-to-beat changes in your heart rate, known as heart rate variability (HRV), which fluctuate as you transition between light sleep, deep sleep, and REM sleep stages.
Fitbit's sleep researchers and the National Sleep Foundation describe the following sleep stages: Light sleep, which serves as your entry point into sleep each night as your body unwinds and slows down; Deep Sleep, which is associated with non-rapid eye movement (NREM) and has less brain activity than REM sleep; and REM Sleep, which is associated with vivid dreams, and periods of REM sleep are typically longer as the night goes on.
Fitbit devices that track heart rate (except Charge HR and Surge) also track sleep stages. To track your sleep with a Fitbit device, you simply wear your tracker or watch to bed. The more sleep you log, the more closely your sleep profile will reflect your patterns. You can also set your device to track sleep in a normal or sensitive mode. Normal mode records significant movements as time spent awake, while sensitive mode records nearly all movements as time spent restless or awake.
Fitbit also offers a Sleep Score, which is based on heart rate, the time spent awake or restless, and sleep stages. The overall sleep score is a sum of your individual scores using three components: sleep duration, sleep quality, and restoration, for a total score of up to 100. With a Premium subscription, you can also turn on the snore and noise detection feature to allow the microphone on your Fitbit Sense or Fitbit Versa 3 to track noise, including snoring from you or someone next to you.
Understanding Sleep: Still Waking but Asleep
You may want to see also
Explore related products
What 'restless' means
Fitbit devices track sleep by monitoring 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 your movements indicate sleep behaviour (like rolling over), help confirm your sleep status.
Restless sleep indicates that you move in your sleep, such as tossing and turning. If your device detects excessive movement, enough that restful sleep won't be possible, your device records this time as awake. Fitbit devices that track heart rate (excluding the Charge HR and Surge models) also track sleep stages.
The Sleep Stages feature uses accelerometer data, heart rate variability (the changes in time between beats), and algorithms to track total time slept, as well as identify trends in restlessness and the amount of time people are awake during a sleep period. These algorithms also review night motion patterns of being asleep and the level of Fitbit users' restlessness.
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 time, your time asleep would be 7 hours and 30 minutes.
You can adjust the sleep sensitivity setting on your device. In normal mode, when you make significant movements like rolling over, your device records time spent awake. In sensitive mode, your device records nearly all movements as time spent restless or awake. This setting may be useful if you wake up feeling tired despite your sleep history showing sufficient rest.
The Sleeper Effect: When Messages Linger
You may want to see also
Explore related products
How to improve sleep
If you've been having trouble falling asleep or staying asleep, there are a number of things you can try to improve your sleep quality. Firstly, it's important to understand what might be causing your restless sleep. Fitbit devices track your sleep by monitoring your movement and heart rate patterns. When the device detects that you haven't moved for about an hour, it assumes you're asleep. If you move a lot during your sleep, such as tossing and turning, your Fitbit will record this as restless or awake time.
To improve your sleep, you can try the following:
- Practice relaxation techniques before bed, such as reading a book, taking a hot bath, deep breathing, or visualization. These techniques can help you unwind and prepare your body for sleep.
- Maintain a consistent sleep schedule. Go to bed and wake up at the same time every day, even on weekends. This helps to regulate your body's internal clock and improve your sleep quality.
- Create a comfortable sleep environment. Keep your bedroom at a cool temperature, typically around 65°F (18.3°C), and ensure it's dark, quiet, and free from distractions.
- Limit your screen time before bed. The blue light emitted by electronic devices can interfere with your sleep hormones, making it harder to fall asleep. Try to avoid screens at least an hour before bedtime.
- Avoid excessive fluid intake before bed. Drinking large amounts of liquids can lead to frequent urination during the night, disrupting your sleep.
- Avoid heavy or high-carb meals close to bedtime. Eating a large meal or high-carb snacks late at night can negatively impact your sleep quality. Try to eat dinner at least a few hours before you go to bed, and limit late-night snacks to small, low-carb options.
If you continue to experience restless sleep or insomnia, consult your healthcare provider. They can help identify any underlying conditions or sleep disorders that may be affecting your sleep quality.
The Sleeping Wolf: A Symbol of Peace and Rest
You may want to see also
Explore related products
Sleep tracking accuracy
Fitbit's sleep-tracking features use advanced signal processing and machine learning algorithms to track total time slept, as well as identify trends in restlessness and the amount of time users are awake during a sleep period. The Sleep Stages feature uses accelerometer data, heart rate variability, and algorithms to track sleep.
Restless sleep indicates that you move in your sleep, like if you toss and turn. If your device detects excessive movement, enough that restful sleep won't be possible, your device records time spent awake. Fitbit devices that track heart rate (except Charge HR and Surge) also track sleep stages.
To get the best results from your Fitbit's sleep tracker, it's recommended that you wear your device higher on your wrist (about 2-3 finger widths above your wrist bone). The band should feel secure but not too tight. If you slept in a position that prevented your device from getting a consistent heart-rate reading, or wore it too loosely, your sleep log may only include your sleep pattern (which shows your time asleep, restless, and awake).
Fitbit estimates 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.
Your overall nightly sleep score is based on your heart rate, the time spent awake or restless, and your sleep stages. The score is a sum of individual scores in sleep duration, sleep quality, and restoration, for a total score of up to 100. Duration focuses on how much you slept, and the more you sleep, the better your score. Sleep quality looks at how much time you spend in deep and REM sleep; the more time you spend in these stages, the higher your score. Finally, restoration tracks how relaxed you were during sleep; a high sleeping heart rate lowers your score. Most people get a score between 72 and 83.
Sleep Talking: What Does It Mean When You Talk in Sleep?
You may want to see also
Explore related products
Sleep tracking settings
To optimise sleep tracking, it is recommended to wear your Fitbit during sleep for at least 14 days in a month, ensuring the device is worn securely about 2-3 finger widths above the wrist bone. The Fitbit app allows you to review your sleep data, including hours slept, sleep score, and sleep stages. You can also edit or delete sleep logs.
For devices that record sleep patterns, you can choose between normal and sensitive modes. Normal mode records significant movements, like rolling over, as time spent awake. Sensitive mode, on the other hand, captures almost all movements as time spent restless or awake, which can be useful if you often feel tired despite showing sufficient rest in your sleep history.
Additionally, Fitbit Premium offers a deeper sleep score breakdown, guided sleep programs, cross-correlated insights based on sleep and activity data, and sleep audio relaxation tools. The Premium subscription also includes the snore and noise detection feature, providing a summary of nightly results, including snoring detection and noise levels.
It is important to note that the sleep tracking features on Fitbit are not intended for diagnosing or treating medical conditions. If you have concerns about your sleep health, it is recommended to consult a healthcare professional and share your sleep data with them.
Sleeping in a Ball: What Does it Mean?
You may want to see also
Frequently asked questions
'Restless' on the Fitbit sleep tracker means that you moved in your sleep, such as tossing and turning.
Fitbit estimates your sleep stages by using your movement and heart-rate patterns. If your device detects excessive movement, enough that restful sleep won't be possible, your device records time spent awake.
You can see your sleep data in the Fitbit app or on your Fitbit device. You can check your sleep score, sleep duration, sleep quality, and restoration.
Wear your Fitbit during sleep for at least 14 days during the previous month (these do not have to be consecutive days). The more sleep you log, the more closely your sleep profile will reflect your patterns.
If you are concerned about your sleep health, you should consult your doctor. You can also try Fitbit's Mindfulness tool, which includes mindfulness sessions and can help you track and understand the effects of your mindfulness practice.
