If you wear an Apple Watch every day, you probably already use the obvious features: messages, email, weather, and Apple Pay. But the watch also includes a set of health tools that are easy to overlook, and some of them can be genuinely important for long-term wellness and safety.
Below is a cleaner look at the Apple Watch health features that many people do not use regularly, along with what they do and how to turn them on.
1. Vitals app for overnight health tracking
The Vitals app turns overnight health data into a simple snapshot of your condition. It can show heart rate, wrist temperature on Apple Watch Series 8 or later and all Apple Watch Ultra models, respiratory rate, and sleep duration, giving you a broader view of how your body is doing from day to day.
If two or more metrics move outside your normal range, the watch can send a notification and explain what may be causing the change. For example, a higher heart rate and elevated wrist temperature could point to illness or alcohol consumption.
This kind of information can help you decide whether to rest more, monitor symptoms, or contact a doctor if something seems off.
How to set up the Vitals app
To establish your baseline, wear your Apple Watch for at least seven days. Make sure it fits properly, since a loose fit can affect accuracy.
To enable notifications, open Settings on your Apple Watch, tap Vitals, and turn notifications on.
For sleep tracking, make sure Track Sleep with Apple Watch is enabled and Sleep Focus is set up. On iPhone, open the Health app, tap Get Started under Set Up Sleep, tap Next, and follow the prompts. You can also complete setup through the Sleep app on Apple Watch.
2. Noise notifications
The Noise app can measure the sound level around you, and you can also turn on alerts for dangerous exposure to loud environments. That can help you act before long-term hearing damage becomes a problem.
Noise alerts are meant to make users more aware of their surroundings and protect hearing health over time. If needed, you can move to a quieter space or use AirPods Pro 2 with Hearing Protection.
Apple also offers a Hearing Test with AirPods Pro 2 or 3 to help establish a baseline for hearing health. AirPods Pro 2 can also be used as hearing aids in supported cases.
How to set up Noise notifications
On iPhone, open the Watch app, tap My Watch, tap Noise, tap Noise Threshold, and choose a decibel level. The available thresholds are based on World Health Organization recommendations.
3. Ovulation estimates
Apple Watch Series 8 and later, along with all Apple Watch Ultra models, include temperature-sensing hardware that helps Cycle Tracking estimate when ovulation occurs. The watch can detect small temperature changes as low as 0.1 degrees Celsius and use them to track changes from your baseline.
After ovulation, body temperature typically rises because of hormone shifts. That pattern helps the Cycle Tracking app improve both ovulation estimates and period predictions.
How to set up ovulation estimates
First, set up Cycle Tracking with fertility predictions enabled and make sure no cycle factors are currently logged. On iPhone or iPad, open the Health app, tap Browse on iPhone or the sidebar on iPad, tap Cycle Tracking, tap Get Started, and follow the instructions.
You also need sleep tracking enabled on Apple Watch and Sleep Focus active for at least four hours per night for five nights. Set up Sleep in the Sleep app on Apple Watch.
4. Fall detection
Fall Detection is one of the most useful safety features on Apple Watch. It can recognize a hard fall, sound an alarm, show an alert, and tap your wrist.
You can dismiss the alert by tapping “I’m OK,” or you can contact emergency services. If the watch detects that you are immobile for about a minute, it will place the call automatically and send your emergency contacts your location.
In some cases, if cellular or Wi-Fi is unavailable, the feature may still reach emergency services through Emergency SOS via satellite, where supported. Apple notes that the watch may not detect every fall and can sometimes mistake high-impact movement for a fall.
How to set up fall detection
On iPhone, open the Watch app, tap My Watch, tap Emergency SOS, and turn Fall Detection on or off. If enabled, you can choose whether it runs all the time or only during workouts.
The feature is available on Apple Watch SE, Apple Watch Series 4 or later, and Apple Watch Ultra or later. It turns on automatically for users age 55 and older if that age is entered during setup or in the Health app.
5. Heart health notifications for atrial fibrillation
Apple Watch Series 1 or later can send alerts for a high heart rate, low heart rate, or irregular rhythm for users age 13 and older.
These alerts work in the background without much setup. If your heart rate is unusually high or low, you may get a notification. If the watch detects signs of atrial fibrillation, you can also receive an irregular rhythm alert.
Atrial fibrillation is a common arrhythmia in adults and can raise the risk of serious health problems, including stroke. Some people have few or no symptoms, which makes passive detection especially useful.
If you receive an irregular rhythm notification, you can speak with your doctor and share a PDF that includes your heart health data and, if available, ECG results. The ECG app on Apple Watch Series 4 or later and all Apple Watch Ultra models records the timing and strength of the electrical signals that control your heartbeat.
How to set up heart health notifications
To set up heart rate notifications, open the Watch app on iPhone, tap My Watch, tap Heart, then set your high and low heart rate thresholds.
For irregular rhythm alerts, open the Health app on iPhone, tap Browse, tap Heart, tap Irregular Rhythm Notifications, and enable the feature.
6. Time in daylight
The ambient light sensor in Apple Watch can estimate how much time you spend in daylight. If you manage a family member’s Apple Watch, you can also monitor their daylight exposure.
Daylight matters for both physical and mental health. Research suggests that around 20 minutes outdoors each day may support vitamin D levels and mood. For children, daylight exposure is also linked to better vision health.
The International Myopia Institute recommends that children spend 80 to 120 minutes outside each day to help reduce the risk of myopia, or nearsightedness.
How to set up time in daylight
First, make sure Motion Calibration & Distance is enabled. On iPhone, open Settings, tap Privacy & Security, tap Location Services, turn on Location Services, tap System Services, and make sure Motion Calibration & Distance is on.
To view your daylight time, open the Health app on iPhone, tap Browse, tap Other Data, and then tap Time in Daylight.
7. State of mind for mood logging
The Mindfulness app on Apple Watch includes State of Mind, which lets you log emotions and daily moods. That can help you recognize patterns in your mental health over time.
You can also use Reflect or Breathe sessions in the app, and those sessions can provide heart rate data after they finish.
Apple designed this feature to support emotional awareness and self-check-ins. Logging how you feel can help you identify what affects your mood and encourage you to use depression or anxiety assessments in the Health app when needed.
How to set up State of Mind
Open the Mindfulness app on Apple Watch, tap State of Mind, and tap Get Started if it is your first time. You can log how you feel in the moment or how you felt throughout the day.
To review your history, open the Health app on iPhone, tap Browse, tap Mental Wellbeing, tap State of Mind, and tap Show in Charts. You can also compare State of Mind with sleep, exercise, time in daylight, and mindful minutes.
8. Sleep apnea notifications
Sleep apnea is a serious disorder where breathing repeatedly stops during sleep, reducing oxygen levels in the body. It affects more than 1 billion people worldwide and often goes undiagnosed. If untreated, it can increase the risk of hypertension, type 2 diabetes, and heart-related problems.
If Apple Watch detects elevated breathing disturbances during sleep over a period of 30 days, it can send a sleep apnea notification. You can also generate a PDF that shows possible sleep apnea events along with three months of breathing disturbance data to discuss with a doctor.
This feature is available on Apple Watch Series 9 or later and Apple Watch Ultra 2 or later, with the latest versions of watchOS and iOS. It is intended for adults 18 and older who have not already been diagnosed with sleep apnea.
How to set up sleep apnea notifications
First, set up Sleep. On iPhone, open the Health app, tap Get Started under Set Up Sleep, tap Next, and follow the instructions. Then wear your Apple Watch to bed for at least 10 nights over 30 days.
To turn on sleep apnea notifications, open the Health app on iPhone, tap Browse, tap Respiratory, tap Set Up under Sleep Apnea Notifications, tap Next, and follow the prompts. You can also view sleep apnea notifications and breathing disturbances under Respiratory.
9. Handwashing
The Handwashing feature on Apple Watch Series 4 and later can detect when you start washing your hands and automatically time the process for 20 seconds, which matches CDC guidance for minimum handwashing duration.
If you stop early, the watch encourages you to keep going. It can also remind you to wash your hands when you return home.
Apple introduced the feature in 2020, using machine learning to identify handwashing motion and audio cues such as running water or soap.
How to set up handwashing
On Apple Watch, open Settings, tap Handwashing, and turn on the Handwashing Timer. The same option is available on managed Apple Watch devices, along with handwashing reminders.