Miya Pearson
Sleep trackers are wearable devices like bracelets or rings, or non-wearable sensors that sit on your bedside table or under your mattress. They can collect a lot of information about your sleep habits, such as sleep duration, quality, and phases. They can also detect interrupted sleep, letting you know when you're tossing and turning or waking during the night. While they can be a useful tool for establishing better habits, sleep trackers do not measure sleep directly. Instead, they often measure inactivity as a surrogate for estimating sleep. Sleep doctors emphasize trusting how you feel in the morning rather than what your tracker tells you. If you're someone who gets anxious or obsessive about daily health measurements, you shouldn't use a sleep tracker.
| Characteristics | Values |
|---|---|
| Purpose | To collect data about sleep habits and help identify patterns |
| Function | Measures sleep indirectly by tracking inactivity and movement |
| Use Cases | Useful for people curious about their sleep and looking for ways to improve it; not recommended for those who obsess over health measurements or have serious sleep problems |
| Types | Wearable devices like bracelets, rings, or watches; non-wearable sensors for the bedside or under the mattress |
| Features | Sleep duration, quality, and phases; lifestyle factor prompts; built-in coaching; sleep scores |
| Accuracy | Varies across devices, with some being more accurate than others; should be used in conjunction with a trained health professional |
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What You'll Learn
Sleep trackers don't measure sleep directly
Sleep trackers are devices that collect information about your sleep habits and patterns. They come in various forms, including wearable devices like bracelets, rings, smartwatches, and headbands, as well as non-wearable sensors that can be placed on your bedside table or under your mattress. While these trackers provide insights into your sleep, it's important to understand that they don't directly measure your sleep.
Sleep trackers rely on measuring inactivity as a surrogate for estimating sleep. They use algorithms to interpret the data they collect and make guesstimates about your sleep duration and quality. For instance, a sleep tracker might measure your physical movement during the night and assume that a lack of movement indicates sleep. However, this assumption may not always be accurate, and the data is often a rough estimate rather than precise measurements.
The accuracy of sleep trackers has been the subject of debate. While some studies and experts question their accuracy in measuring sleep stages and efficiency, others find certain trackers effective at measuring sleep duration and quality. For instance, a study comparing 11 sleep trackers against PSG found that the Pixel Watch, Galaxy Watch 5, and Amazon Halo Rise performed well in measuring sleep stages, while the Oura Ring and Apple Watch excelled at measuring sleep efficiency and latency.
It's important to recognize that sleep trackers have limitations and shouldn't be solely relied on for diagnosing or treating sleep disorders. If you have concerns about your sleep quality or insomnia, consulting a trained health professional is essential. Sleep trackers can be a useful tool to complement professional advice and help you reflect on your sleep habits and patterns. They might provide insights into how your daily choices affect your sleep, but they don't directly measure the sleep itself.
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They can help identify sleep problems
Sleep trackers can help you identify sleep problems and improve your sleep habits. They can provide insights into the quantity and quality of your sleep, allowing you to recognize patterns in your sleep habits and make adjustments accordingly. For example, you may find that you feel more energetic when you sleep from 11 p.m. to 7 a.m. instead of 10 p.m. to 6 a.m. or that your sleep is disrupted when you consume caffeine after lunchtime.
Sleep trackers can also detect interrupted sleep, informing you of the times you wake up during the night or toss and turn. Some trackers provide overall sleep scores or charts to help you visualize your sleep quantity and quality. They may also track sleep phases and time your alarm to go off during a period of lighter sleep.
Additionally, certain sleep trackers prompt you to input lifestyle factors, such as caffeine intake, meal times, and stress levels, which can impact your sleep. This feature helps you identify potential areas where adjustments can be made to improve your sleep quality.
While sleep trackers can be beneficial for understanding your sleep patterns, they do not directly measure sleep. Instead, they often estimate sleep by measuring inactivity. For exact data and the diagnosis of sleep disorders, a medical sleep study in a specialized lab is necessary. Sleep trackers should be used in conjunction with advice from trained health professionals and not as a replacement for their guidance.
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Trackers can detect sleep quality and duration
Sleep trackers can be a great way to get a clear look at the quantity and quality of your sleep. They can help identify sleep problems and track progress to see how well different strategies work over time. Many sleep trackers include built-in coaching to improve your sleep habits.
Sleep trackers work by collecting raw data and then using an algorithm to interpret what the data says about your sleep. They measure sleep indirectly by tracking the time you are inactive and recording when you fall asleep and when you stir in the morning. They can detect interrupted sleep, letting you know when you are tossing and turning or waking during the night. Some trackers prompt you to enter information about activities that can affect sleep, such as caffeine intake, diet, and stress levels.
Some sleep trackers also monitor environmental factors, such as the amount of light or temperature in your bedroom. They can also track sleep phases and time your alarm to go off during a period when you are sleeping less deeply.
It is important to note that sleep trackers do not measure sleep directly. They make estimations based on inactivity and physical movement. For exact data about your sleep habits, a medical sleep study that monitors brain waves is necessary. Sleep trackers can be a useful tool to help you recognize patterns in your sleep habits and make adjustments, but they should not be relied upon as the sole source of information about your sleep.
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They can cause anxiety and obsession
Sleep trackers are increasingly popular, and for good reason: taking sleep seriously is important. However, sleep trackers can also cause anxiety and obsession. This phenomenon has been termed "orthosomnia", a combination of the Greek words "ortho", meaning "straight" or "correct", and "somnia", meaning "sleep".
Orthosomnia is characterised by an obsessive pursuit of ideal sleep, free from disturbances, with regular sleep cycles and a focus on the body's healing process. Individuals with orthosomnia may exhibit insomnia-like symptoms, such as difficulty falling asleep, frequent waking throughout the night, and tiredness during the day. They may also experience negative emotions such as anger, despair, and anxiety. This condition is driven by a fixation on the data provided by sleep trackers, rather than a person's understanding of how their body responds to sleep. The quest for the \"perfect\" night's sleep can interfere with actually getting any rest, with individuals spending an unusual amount of time in bed striving to enhance their sleep data.
Several factors contribute to the development of orthosomnia. Firstly, sleep trackers provide detailed information on various sleep metrics, such as total sleep, deep sleep, REM sleep, sleep efficiency, and resting heart rate. This abundance of data can fuel a preoccupation with optimising sleep, leading to anxiety and obsession. Secondly, our culture's obsession with self-improvement and the notion of "hacking" our health and productivity further contributes to orthosomnia. The availability of tracking technologies and apps encourages a mindset of measuring and optimising our sleep, turning it into a source of anxiety rather than a time for relaxation.
Additionally, the reliance on sleep trackers may delay individuals from seeking appropriate professional help for sleep issues. They may become accustomed to relying solely on their sleep tracker data instead of seeking formal sleep studies or expert advice. This can result in poorly guided attempts to improve sleep, making the problem worse. Furthermore, individuals with orthosomnia may incorrectly assume that their sleep trackers are perfect and accurate, when in reality, these devices are only data recorders and may not provide completely accurate or regulated information.
While sleep trackers can provide insights into sleep patterns, it is important to be mindful of the potential for obsession and anxiety. Striking a balance between utilising the data for self-improvement and maintaining a healthy relationship with sleep is crucial.
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They are useful for recognising patterns
Sleep trackers can be useful for recognising patterns in your sleep habits. They collect data on your sleep duration, quality, and phases. For example, you might discover that you feel more sluggish when you sleep from 10 p.m. to 6 a.m. but more energetic when you sleep from 11 p.m. to 7 a.m. You can also track the impact of factors like bedroom temperature, exercise, and caffeine consumption on your sleep.
Sleep trackers can help identify changes in trends. For instance, if your sleep time suddenly changed two weeks ago, you can look for changes in stress, environment, or daily habits that might have caused this shift. This can help you identify new factors that affect your sleep and take steps to mitigate them in the future.
Sleep tracking devices can also be used to experiment with new routines and habits. For example, you might try a new evening routine for two weeks and see if your sleep data improves. If it does, it can motivate you to stick to the new routine.
Some sleep trackers also offer built-in coaching to improve your sleep habits and track your progress over time. They can provide insights on how to optimise your sleep, such as recommending a bedtime routine or reminding you to go to bed on time.
While sleep trackers can be helpful for recognising patterns, it's important to remember that they don't directly measure sleep. Instead, they estimate sleep by measuring inactivity and tracking physical movement. The data provided by sleep trackers should be considered alongside other factors, such as how well-rested you feel when you wake up and your energy levels throughout the day.
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Frequently asked questions
Sleep trackers can help you identify patterns in your sleep habits and recognise areas for improvement. They can also be useful for tracking your sleep alongside lifestyle factors, such as caffeine intake, stress levels, and daily exercise.
Sleep trackers do not directly measure sleep and may not provide perfectly accurate data. They should not be used as a substitute for medical advice in the case of serious sleep problems. Some people may become anxious or obsessive about the data provided by sleep trackers, which can generate stress and negatively impact sleep.
Sleep trackers can be a useful tool for optimising your sleep, but they are not for everyone. If you are curious about your sleep habits and want to identify areas for improvement, a sleep tracker could be a good option for you. However, if you are someone who tends to obsess over daily health measurements, you may find that a sleep tracker causes more harm than good.
