Ashwin Lewis
The Samsung Galaxy Active 2 is a smart watch that can track your sleep patterns. It uses your movement and heart rate to determine if you are awake, or in light, deep, or REM sleep phases. This data is tracked in the Samsung Health app, which can be viewed on the watch, but it is recommended to be viewed on a smartphone. The watch also has enhanced sleep tracking analysis, auto workout tracking, and pace coaching. However, some users have reported issues with the sleep tracking feature, such as inaccurate data or sudden cessation of sleep tracking.
| Characteristics | Values |
|---|---|
| Sleep tracking | Uses movement and heart rate to determine sleep phases |
| Sleep phases | Awake, REM, light, deep |
| Sleep tracking accuracy | Some users report issues with accuracy |
| Sleep tracking app | Samsung Health |
| Sleep tracking data | Viewable on the watch or smartphone |
| Additional features | Snoring detection, blood oxygenation level monitoring |
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What You'll Learn
Heart rate and movement tracking
The Samsung Galaxy Active 2 uses heart rate and movement tracking to determine the sleep phase you are in. This includes when you are awake, and when you are in light sleep, deep sleep, or REM sleep. Your heart rate and movement data are recorded in the Samsung Health app, which can be viewed on the watch or on a smartphone.
Samsung Health can differentiate between the various sleep phases by tracking your movement and heart rate. For example, when you are awake, your heart rate is typically higher compared to when you are asleep (except during REM sleep). During the REM sleep phase, your heart rate increases and varies, while your muscles become practically paralysed. During light sleep, your heart rate is slower than when you are awake but hasn't reached its lowest level yet. In deep sleep, your heart rate is at its lowest level, and you barely move at all.
While the Samsung Galaxy Active 2 can provide valuable insights into your sleep patterns, it is important to note that sleep tracking on a watch can be hit or miss. This is because it infers the stage of sleep you are in based on movement and heart rate, rather than brainwave patterns, which are more indicative of the phase of sleep. As a result, some users have reported issues with the accuracy of sleep tracking on the Samsung Galaxy Active 2, particularly with the deep sleep recordings.
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Sleep stages and tracking accuracy
Sleep tracking is an important feature of the Samsung Galaxy Active 2 watch, and Samsung Health app. The watch uses movement and heart rate to determine whether the wearer is awake, or in light, deep, or REM sleep phases. This data is then tracked in the Samsung Health app, which can be viewed on the watch, but it is recommended that it is viewed on a smartphone.
Samsung Health records and manages 24-hour activity and sleep patterns to cultivate a healthy habit. The app provides daily goals and coaching programs based on sleep data to help the wearer form better sleep habits. The app also allows the wearer to compare their sleep score with other users in the same age and gender groups.
The four stages of sleep are:
- Awake
- REM
- Light
- Deep
During the REM stage, the eyes move rapidly, and the heart rate picks up and varies, but the brain paralyses the muscles, making the body very still. This is the deepest sleep stage, though the body becomes more active. During the light sleep phase, the heart rate begins to slow down, but doesn't reach its lowest level, as the body is still active and needs oxygen from the blood. In the deep sleep stage, the heart rate reaches its lowest level.
The watch has been criticised for its sleep tracking accuracy. Some users have reported that their deep sleep recordings are non-existent or very low, and that the watch has failed to record any sleep data at all. However, other users have reported that the watch works fine for sleep tracking.
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Sleep tracking features
The Samsung Galaxy Active 2 uses your movement and heart rate to determine if you are awake, or in light, deep, or REM sleep phases. This data is tracked in the Samsung Health app, which can be viewed on the watch, but it is recommended to be viewed on a smartphone. The Samsung Health app also provides you with daily goals and coaching programs based on sleep data to help you form better sleep habits.
The Samsung Health app records and manages your 24-hour activity and sleep pattern to cultivate a healthy habit. When you exercise for more than 10 minutes while wearing the Galaxy Watch Active 2, it will display an encouraging message. When the watch recognizes inactivity for more than one hour, it will notify you and show you some stretching motions to follow.
The watch automatically records your sleep based on your movement. You can turn on Record REM sleep on your watch to track the four stages of sleep: when you’re awake, REM, light, and deep. The sleep tracking feature occasionally gets mistaken and will start recording when a person is awake. For example, someone working at a desk may be very still with one arm, and have their arm in a similar position to when they are laying down.
Samsung Health also continuously measures blood oxygenation levels, even during sleep, to check your health. This function is only available on the Galaxy Watch4 series. Additionally, Samsung Health's snoring detection feature records and alerts you to the sounds you make while you sleep.
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Comparison with other sleep tracking devices
The Samsung Galaxy Active 2 uses movement and heart rate to determine whether the user is awake or in light, deep, or REM sleep phases. This data is tracked in the Samsung Health app, which can be viewed on the watch or a smartphone. However, reviews of the Active 2's sleep tracking feature have been mixed, with some users reporting that it records very little to no deep sleep.
When compared to other sleep tracking devices, the Samsung Galaxy Active 2 offers similar features in terms of tracking sleep stages and heart rate. Here is a comparison with some popular sleep tracking devices:
- Fitbit: The Fitbit app provides insights into general restlessness (time spent tossing and turning) and sleeping heart rate. However, these data points are relatively hidden compared to what is offered by other apps, such as Oura or Whoop.
- Apple Watch: The Apple Watch offers sleep tracking features that can be accessed through the Health app on iPhones. It provides information such as time in bed, sleep time, heart rate, respiratory rate, and average temperature. However, Apple's charts are hard to read, and there is no dedicated sleep score. Additionally, some users have found the Apple Watch uncomfortable to wear while sleeping.
- Oura Ring: The Oura Ring Gen3 is a small, discreet device that measures various metrics, including heart rate, heart rate variability, blood oxygen levels, body temperature, and activity. It offers comprehensive data and daily guidance, with frequent firmware updates. While it has been praised for its accuracy, some studies suggest that it may not be extremely precise.
- Whoop Strap: The Whoop strap uses an accelerometer and its trademarked algorithm to accurately track sleep stages and heart rate. It has been favoured by some users for its ability to correctly sense the times they went to bed and woke up. However, one user reported issues with the sensor accuracy, mistaking inactivity for exercise.
- Garmin: Garmin's fitness trackers, such as the Epix Pro, offer Advanced Sleep Monitoring, tracking sleep stages, blood oxygen saturation, respiration, and restlessness. The Connect app allows users to set Sleep and Wake windows for more accurate results. However, it may overestimate sleep duration and does not include naps in the Sleep Score.
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Sleep tracking issues
The Samsung Galaxy Active 2 uses your movement and heart rate to determine if you are awake, or in light, deep, or REM sleep phases. This data is tracked in the Samsung Health app, which can be viewed on the watch, but it is recommended to be viewed on a smartphone. However, there have been some issues with sleep tracking on the Samsung Galaxy Active 2.
Some users have reported that their watch is not recording any sleep data at all, with the app screening "No data" under the moon symbol. In some cases, this issue has been resolved by performing a hard reset of the device.
Other users have reported that their watch is not accurately tracking the amount of deep sleep they are getting, with the watch reporting much lower amounts of deep sleep than other devices. This issue does not seem to have a clear solution, with some users speculating that it is due to an issue with Samsung's sleep tracking algorithm.
It is important to note that sleep tracking on a watch can be inaccurate as it infers the stage of sleep you are in by movement and heart rate, when it is actually brainwave patterns that are indicative of the phase of sleep. Therefore, it is recommended to use a dedicated sleep tracking device or app for more accurate results.
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Frequently asked questions
The Samsung Active 2 tracks sleep by monitoring your movement and heart rate to determine whether you are awake or in light, deep, or REM sleep. This data is tracked in the Samsung Health app and can be viewed on the watch or a smartphone.
To view your sleep data, open the Samsung Health app on your smartphone and navigate to the sleep tracking section. Here, you can view your sleep patterns, duration of each sleep phase, and your movements while asleep.
Yes, Samsung Health provides daily goals and coaching programs based on your sleep data to help you form better sleep habits. It also offers a snoring detection feature that records and alerts you to any sounds you make while sleeping.
Some users have reported issues with the accuracy of sleep tracking on the Samsung Active 2, specifically regarding the detection of deep sleep. There have also been reports of sleep tracking data not syncing properly with the Samsung Health app.
