
The Apple Watch has a built-in sleep tracker that can help you monitor your sleep trends and sleep better. To use this feature, you need to enable sleep tracking on your Apple Watch and iPhone. Make sure your Apple Watch is charged to at least 30% before bed, and wear it to bed for at least 1 hour. The watch will use your sleep schedule and Sleep Focus to detect when you're sleeping and estimate your sleep stages. You can view your sleep data on your Apple Watch or in the Health app on your iPhone, which will show your sleep stages, time asleep, and sleep trends.
| Characteristics | Values |
|---|---|
| How to use Apple Watch to track sleep | Wear the watch to bed, ensuring it is unlocked with wrist detection turned on. |
| How to view sleep data | Open the Sleep app on the watch, then turn the Digital Crown to view sleep data for the last 14 days. |
| How to view sleep history | Open the Health app on iPhone or iPad, tap Browse, then tap Sleep. |
| How to view respiratory rate | Open the Health app on iPhone or iPad, tap Browse, then tap Respiratory, then tap Respiratory Rate. |
| How to enable sleep tracking | Turn on "Track Sleep with Apple Watch" in the Watch app. |
| How to set up sleep schedule | Set a sleep/wake schedule on the iPhone, including bedtime reminders and Sleep Focus. |
| How to set up charging reminders | Turn on Charging Reminders in the Watch app to remind you to charge your watch before bedtime. |
| How to set up Sleep Focus | Open the Settings app, then set up Sleep Focus to access specialised home screens and notification settings. |
| How to view sleep stages | View sleep stages in the Sleep app on the watch or in the Sleep section of the Health app on the phone. |
| Third-party apps | AutoSleep, Sleep Cycle, SleepWatch |
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What You'll Learn

Setting up sleep tracking
Next, you will need to configure your Watch-specific sleep settings in the Watch app. You can access this via the Health app by tapping "Full Schedule & Options" from the Sleep screen. At the bottom of that screen, tap "Manage Sleep in the Apple Watch App".
Now, turn on "Track Sleep with Apple Watch" to enable tracking. You can also turn on Charging Reminders so that your Watch will notify you to charge it before bedtime if your battery is low.
You can also set up your Sleep Focus, which is optional but gives you access to specialised home screens and notification settings that will turn on at bedtime. To do this, go to the Settings app on your Apple Watch, then go to Privacy & Security > Health. You can also set up Sleep Focus via the Apple Watch app on your iPhone.
You can also set a sleep/wake schedule on your iPhone. Go to Clock/Alarm and set your bedtime and wake up times, which will control reminders, alarms, and changes in displays and notifications.
Finally, make sure your Apple Watch is charged to at least 30% before you go to bed, and that it fits comfortably on your wrist. If your watch is too loose, the accelerometer may register too much movement during your sleep, leading to inaccurate data.
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Viewing sleep data
To view your sleep data, you need to ensure that you have set up sleep tracking on your Apple Watch. This is done by turning on "Track Sleep with Apple Watch" in the Watch app on your iPhone. You can also set up your Sleep Focus, which is optional, but gives you access to specialised home screens and notification settings that will turn on at bedtime.
Once you have set up sleep tracking, you can view your sleep data in the Health app on your iPhone or iPad. To do this, open the Health app and tap Browse at the bottom of the screen. Then, tap Sleep. If you have Sleep saved as a favourite, you can access it from the Summary page in the Health app. You can view your sleep history for the past week, month, or six months by tapping W, M, or 6M at the top of the chart.
You can also view your recent sleep data on your Apple Watch. To do this, open the Sleep app on your watch, then turn the Digital Crown to view your Sleep Stages data, Time Asleep, and your Sleep Duration for the last 14 days.
The Apple Watch's sleep-tracking function can display a graph of your sleep stages, with deep sleep at the bottom in purple, "core" (light) sleep in the middle in blue, REM higher up in lighter blue, and awake at the top in orange. It will also show you your heart rate during the night and your sleep trend.
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Using third-party apps
Third-party apps can be used to track your sleep on your Apple Watch. These apps can provide you with richer and more insightful statistics about your sleep.
To add a third-party app, open the Watch app on your iPhone. Tap Discover, select Explore Watch Apps, and tap the search icon. Search for a phrase such as "sleep trackers" or enter the name of a specific app. Once you find the app you want, tap Get on any free app to install it or select the price button to buy it.
AutoSleep is a popular third-party sleep tracking app for the Apple Watch. It automatically tracks your sleep with no buttons to press. It also has no user analytics tracking, advertising plugins, or data upload. It integrates with Sleep Stages from the Apple Sleep app, so you can use the Apple Sleep app and view all the information in AutoSleep.
Sleep Pulse 3 is another fully-featured standalone sleep tracking app for the Apple Watch. It tracks your heart rate and motion, and there is a sleep view you can access when you wake up in the middle of the night. All the sleep analysis is done on the Watch, not on your phone.
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Improving sleep accuracy
To improve the accuracy of sleep tracking on your Apple Watch, follow these steps:
Firstly, ensure that your Apple Watch is charged to at least 30% before you go to bed. If your watch battery dies during sleep, it will stop tracking your sleep data. The Apple Watch typically delivers around 18 hours of battery life on a single charge, so you may need to set aside an hour during the day to charge it if you plan to use it for sleep tracking. To help with this, you can turn on Charging Reminders, which will notify you to charge your watch before your wind-down time.
Next, make sure you wear your Apple Watch to bed for at least one hour each night. The watch uses your movements and phone use to detect whether you are sleeping and to estimate the different stages of sleep. If you do not wear it to bed, your graph may not show any data. Ensure that your watch fits comfortably on your wrist; if it is too loose, the accelerometer may register too much movement during your natural sleep, leading to inaccurate results.
Additionally, you can create a personalised sleep schedule to help meet your sleep goals. In the Health app on your iPhone, you can set up a sleep goal, a bedtime reminder, and a wake-up time. You can also enable Sleep Focus, which limits distractions before bed and protects your sleep after you are in bed by simplifying your Lock Screen and turning off your notifications.
While the sleep staging information provided by the Apple Watch can be interesting, sleep experts advise taking it with a grain of salt. The watch cannot measure your brain's electrical activity directly, so it uses other metrics like physical movement, pulse rate, and breathing to infer which stage of sleep you are in, which may be less accurate.
For the time being, older Apple Watch models like the Series 8 or the first-gen Ultra may provide slightly better sleep tracking accuracy as they have a functioning blood oxygen sensor. The Apple Watch SE lacks this sensor, and on the Series 9 and Ultra 2, it has been disabled due to a patent dispute.
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Adjusting sleep schedules
Adjusting your sleep schedule on your Apple Watch can help you meet your sleep goals and improve your overall health. To create a sleep schedule, you can set up the following general settings:
Sleep Goal
Firstly, you can set a sleep goal, which is the number of hours of sleep you want to get each night. You can adjust this goal as needed on your iPhone or Apple Watch. To do this, open the Health app, tap 'Browse' at the bottom of the screen, then tap 'Sleep'. Tap 'Full Schedule & Options', then tap 'Wind Down' or 'Sleep Goal' under 'Additional Details'. Adjust your time, then tap 'Wind Down' or 'Sleep Goal' again to save your changes.
Sleep Focus
You can also choose whether or not to turn on Sleep Focus, which limits distractions before you go to bed and protects your sleep after you're in bed. This feature gives you access to specialised home screens and notification settings that will turn on at bedtime.
Wind Down
You can set a wind-down period before bed, which will give you a bedtime reminder and turn on Sleep Focus.
Sleep Tracking
Sleep tracking uses your motion to detect sleep when you wear your Apple Watch to bed. You can also set up multiple sleep schedules, for example, one for weekdays and another for weekends.
Charging Reminders
It is recommended that you turn on Charging Reminders so that your Apple Watch can notify you to charge it before bedtime if your battery is low.
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Frequently asked questions
To set up sleep tracking, go to the Apple Watch app on your iPhone and hit the Sleep tab. Toggle the slider for "Track Sleep with Apple Watch" and turn on "Charging Reminders" so that the watch can notify you to charge it before bedtime.
The Apple Watch uses the sleep schedule you create to know when you are sleeping. During this time, it uses your movements and phone use to detect whether you are sleeping and to estimate the different stages of sleep.
You can view your sleep data on the Sleep app on your watch or the Sleep section of the Health app on your phone. On the watch, turn the Digital Crown to view your Sleep Stages data, Time Asleep, and Sleep Duration for the last 14 days. On the Health app, tap Browse at the bottom of the screen, then tap Sleep.
While the Apple Watch is a solid sleep tracker, no wearable is going to be completely accurate when it comes to sleep stages. The Apple Watch also has a significant shortcoming in its battery life, which may impact its ability to track sleep.
Third-party apps such as Sleepwatch, AutoSleep, and Sleep Cycle are alternatives to the Apple Watch's native sleep tracking.
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