Gina Johnson
Sleep trackers are devices that can be worn on the body or placed in the bedroom to monitor sleep patterns and quality. They are designed to help users understand their sleep habits and make adjustments to improve sleep. Sleep trackers can monitor a variety of metrics, including sleep duration, sleep quality, heart rate, blood oxygen levels, body temperature, and more. While they can provide valuable insights, sleep trackers are not medical devices and should not be used to diagnose sleep disorders. For exact data about sleep habits and potential disorders, a medical sleep study is required.
| Characteristics | Values |
|---|---|
| Type | Wearables (rings, watches, headbands, etc.), bedside devices, mattress pads |
| Wearable Tracker Placement | Wrist, bicep, finger, forehead |
| Data Collected | Sleep duration, sleep quality, heart rate, respiration rate, blood oxygen levels, skin temperature, sleep phases, snoring, REM sleep, sleep efficiency, sleep consistency, sleep trends, energy output, body temperature, blood glucose levels, sleep debt, circadian rhythm, sleep cycles |
| Additional Features | Smart alarm, simulated sunrise wake-up function, plays music/sounds, surveys/journal entries, daily outlook tab, exercises, optical heart rate monitor |
| Brands | Oura, WHOOP, Biostrap, Galaxy, Apple, Muse S, Withings, Kokoon Nightbuds, Bose Sleepbuds II, Amazfit Zenbuds |
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What You'll Learn
Wearables: rings, watches, headbands, etc
Wearables are a popular choice for sleep tracking, with options including rings, watches, and headbands. These devices can track a range of metrics, including sleep duration, sleep quality, heart rate, blood oxygen levels, body temperature, and more. They can be a convenient way to monitor your sleep without having to wear a bulky device or remember to put on an extra tracker before bed. Here are some of the most popular options:
Rings
Rings are a discreet and comfortable way to track your sleep. Some popular options include the Oura Ring 4, the SLEEPON Go2Sleep 3, and the Galaxy Ring. The Oura Ring 4 offers in-depth tracking of sleep and daily activity, with sensors that measure heart rate, temperature trends, and blood oxygen levels. It has a sleek, lightweight design and a battery life of up to eight days. The SLEEPON Go2Sleep 3 is a silicon ring that syncs with your phone and can identify dips in blood oxygen levels, which may indicate underlying sleep-related breathing disorders. It also monitors blood glucose levels and heart rate. The Galaxy Ring is another discreet and comfortable option, offering sleep tracking with Samsung Health integrations. It provides high sleep and energy ratings and has a battery life of around seven days.
Watches
Smartwatches are another option for sleep tracking, with options such as the Apple Watch and the Pixel Watch 3. While they may be bulkier than rings, they often offer a wider range of features. For example, the Apple Watch can be used for fitness tracking in addition to sleep tracking. The Whoop strap is another popular choice, with a lightweight, woven wristband that is comfortable to wear all day and during sleep. It offers sleep and recovery tracking, heart rate monitoring, and a stress monitor feature.
Headbands
The Muse S Headband Sleep Tracker is a soft headband that monitors brain activity through your skin, as well as tracking movement, heart rate, and skin temperature. It connects to the Muse app on your phone via Bluetooth and uses gentle soundscapes or spoken-word journeys to help you relax and fall asleep. It then monitors your sleep, including restlessness and which side you sleep on.
While wearables can provide a wealth of data about your sleep habits, it's important to note that they do not directly measure sleep. Instead, they often estimate sleep based on inactivity. For exact data about your sleep, a medical sleep study would be required. However, wearables can still be useful for helping you recognize patterns and make changes to improve your sleep.
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Bedside devices
Sleep trackers can be a great way to gain insight into your sleep habits and patterns. While they do not measure sleep directly, they can help you recognise patterns in your sleep habits. There are various types of sleep trackers available, including those that can be worn on the wrist, clipped to a pillow, or placed on a bedside table.
Bedside sleep trackers are a great option for those who do not want to wear anything on their body while sleeping. These devices are usually placed on a bedside table or nightstand and use advanced technology to monitor your sleep. Some common features of bedside sleep trackers include:
- Sleep duration tracking: These devices can record when you fall asleep and wake up by tracking your inactivity.
- Sleep quality analysis: They can detect interrupted sleep, such as tossing and turning or waking up during the night.
- Smart alarms: Some trackers have smart alarms that gently wake you up during the ideal sleep stage, helping you feel more refreshed.
- Heart rate monitoring: Many trackers can measure your heart rate, which can provide insights into the quality of your sleep.
- Respiratory rate tracking: Some devices, like the WHOOP sleep tracker, can monitor your respiratory rate in addition to your heart rate and blood oxygen levels.
- Blood oxygen monitoring: Bedside trackers like the SLEEPON Go2Sleep 3 can monitor your blood oxygen levels continuously during sleep, helping detect underlying sleep-related breathing disorders.
- Brain activity tracking: Advanced trackers like the Bía Smart Sleep Mask can monitor your brain activity and track your sleep stages. It also offers a simulated sunrise wake-up function and plays relaxing music to aid sleep.
- Multi-user capabilities: Some bedside trackers can support multiple users, making them ideal for couples or families who want to track their sleep.
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Under-mattress mats
One example of an under-mattress mat is the Chilipad by Sleepme. This tracker utilizes ballistocardiography technology to detect movement, heart rate, and respiration based on micro-movement data from its sensors. It is ultra-thin and can fit seamlessly at chest level under your mattress pad or fitted sheet. The Chilipad offers insights into your sleep metrics, including HRV, deep sleep, and sleep scores. It can also be paired with the Chilipad Dock Pro Sleep System for real-time, AI-driven temperature adjustments.
Another option is the Withings Sleep, which uses a pneumatic sensor to measure respiratory rate, heartbeats, and body movements. It also features a sound sensor that identifies audio signals specific to snoring and breathing disturbances. Withings Sleep offers insights into sleep cycles (deep, light, and REM), snore detection, and heart rate. The data is stored online with a Withings account, and the Withings+ subscription provides additional features and support for creating a healthy routine.
When choosing an under-mattress mat, it is important to consider the type of mattress you have. Some thick and dense mattresses, as well as memory foam mattresses, may affect the sensitivity of the sensors, leading to less precise data. It is recommended to research and look for a tracker that has been tested for accuracy and has positive reviews.
While under-mattress mats offer a comfortable and non-invasive way to track your sleep, they may have difficulty detecting movements or differentiating between multiple people in the same bed. For more precise monitoring of body temperature and heart rate, wearable sleep trackers that are placed next to the skin may be a better option. However, the decision ultimately comes down to personal preference, as some people may find wearable trackers uncomfortable or disruptive to their sleep.
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Medical sleep studies
Sleep trackers can be useful for monitoring sleep and helping to recognise patterns in sleep habits. However, they do not measure sleep directly and are not as accurate as medical sleep studies.
To prepare for a sleep study, individuals are advised to avoid caffeine and alcohol, as well as refrain from using certain cosmetics and lotions that may interfere with the electrodes used in the study. Small metal disks, or electrodes, are attached to various parts of the body, including the scalp, eyelids, chin, chest, and legs. These electrodes are connected to a computer, which records the activity of the multiple body systems.
Sleep studies are particularly useful for diagnosing sleep disorders, such as sleep apnea, narcolepsy, periodic limb movement disorder, and certain types of seizures. They can help determine the presence of conditions that affect or disrupt the brain, nervous system, breathing, and heart function. The data collected from these studies can inform treatment plans and help improve overall health, safety, and quality of life.
While sleep trackers can provide insights into sleep habits, medical sleep studies offer a more comprehensive and accurate assessment of sleep quality and can be instrumental in diagnosing and treating various sleep-related conditions.
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Sleep tracking apps
There are a variety of sleep tracking apps available, each with its own unique features and capabilities. One popular app is Sleep Cycle, which offers detailed stats and sleep graphs to help users understand their sleep patterns. It utilizes the phone's sound recorder to analyze sounds and track sleep, and provides a variety of 'Sleep Programs' with tips and hacks for better sleep. Another app, SleepScore, uses sonar technology to measure sleep through the user's breath and body movements. It can be placed on the nightstand, eliminating the need to have the phone in bed.
Other sleep tracking apps include the Rise app, which connects with health apps on the phone to track sleep debt and circadian rhythm, and the WHOOP app, which is used in conjunction with a wearable device or on its own. The WHOOP app monitors heart rate, respiratory rate, blood oxygen levels, and skin temperature to optimize sleep. Additionally, the Biostrap Kairos app is a wrist-worn tracker that uses a PPG sensor and accelerometer to track heart rate, respiration, and HRV, providing a sleep score based on biometrics.
While sleep tracking apps can be useful for gaining insights into sleep patterns, they have limitations. They may not accurately identify when a person is sleeping or awake, especially in cases of sleep disorders like sleep apnea where movement is minimal. It is recommended to consult a doctor if there are concerns about sleep disorders. Additionally, the accuracy and validity of sleep tracking apps have been questioned, and they cannot replace medical monitoring in a sleep clinic.
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Frequently asked questions
Some sleep trackers include the Oura Ring 4, the WHOOP sleep tracker, the SLEEPON Go2Sleep 3 Tracker, the Bía Smart Sleep Mask, the Muse S Headband Sleep Tracker, the Withings Sleep Analyzer, the Kokoon Nightbuds, and the Biostrap Kairos.
Sleep trackers collect information about your sleep habits and patterns, such as sleep duration and quality. They can also monitor your heart rate, respiratory rate, blood oxygen levels, and skin temperature. However, it is important to note that sleep trackers do not directly measure sleep.
When choosing a sleep tracker, consider your comfort and how it fits into your digital ecosystem. Also, think about the specific features you want, such as in-depth health insights or a simple daily sleep tracking solution.
Sleep trackers can provide insights into your sleep patterns and help you develop better sleep habits. However, they are not medical devices and cannot diagnose sleep disorders. For a precise analysis, you would need to undergo a medical sleep study in a sleep clinic.
