9 Apple Watch Health Features You Need to Know About (2025)

Did you know your Apple Watch is more than just a stylish accessory? It's a powerhouse of health-tracking features, many of which you might not even be aware of. But here's where it gets fascinating: a doctor at Apple has revealed nine hidden gems that can transform your smartwatch into a personal wellness coach. From monitoring your vitals to detecting sleep apnea, these features are designed to keep you informed and proactive about your health. Let’s dive into these game-changing tools and how to unlock them.

1. The Vitals App: Your Daily Health Snapshot
Imagine having a personal health assistant on your wrist. The Vitals app does just that by tracking overnight metrics like heart rate, wrist temperature, respiratory rate, and sleep duration. And this is the part most people miss: if two or more metrics are out of range, you’ll get a notification explaining why. For instance, a high heart rate and temperature could signal illness or alcohol consumption. Dr. Lauren Cheung, a clinician at Apple, emphasizes how this app empowers you to make informed decisions about your health.

How to Set It Up: Wear your Apple Watch for at least seven days to establish your typical range. Ensure it fits snugly for accurate readings. Enable notifications in the Settings app under Vitals. For sleep tracking, set up Sleep Focus in the Health app on your iPhone.

2. Noise Notifications: Protect Your Hearing
The world can be loud, and prolonged exposure to noise can harm your hearing. The Noise app measures environmental sound levels and alerts you when they’re dangerously high. Here’s the controversial part: while Apple encourages you to take action, like moving to a quieter space or using AirPods Pro with Hearing Protection, some argue that relying on tech for such basic awareness might make us less mindful of our surroundings. What do you think?

How to Set It Up: Open the Watch app on your iPhone, go to My Watch > Noise > Noise Threshold, and set your preferred decibel level based on WHO recommendations.

3. Ovulation Estimates: A Game-Changer for Family Planning
For those tracking fertility, the Apple Watch Series 8 and Ultra models offer ovulation estimates using advanced temperature-sensing technology. But here’s the kicker: this feature relies on detecting a biphasic shift in temperature post-ovulation, which some critics argue might not be foolproof for everyone. Still, it’s a remarkable step forward in women’s health tech.

How to Set It Up: Enable Cycle Tracking with fertility predictions in the Health app. Ensure Sleep Focus is active for at least 4 hours per night for five nights.

4. Fall Detection: Your Silent Guardian
Falls can happen to anyone, but this feature is particularly beneficial for active individuals and seniors. If your watch detects a hard fall, it sounds an alarm, displays an alert, and taps your wrist. The debate here: while it’s a lifesaver for many, some worry about false alarms during high-impact activities. Have you ever had a false alert?

How to Set It Up: Enable Fall Detection in the Watch app under Emergency SOS. You can choose to activate it always or only during workouts.

5. Heart Health Notifications: A Lifeline on Your Wrist
High, low, or irregular heart rates can be early warning signs of serious conditions like atrial fibrillation. The Apple Watch monitors these passively, alerting you to take action. The catch? While it’s not a medical device, some users have reported life-saving interventions thanks to these notifications.

How to Set It Up: Configure heart rate and irregular rhythm notifications in the Health and Watch apps on your iPhone.

6. Time in Daylight: Boost Your Mood and Health
Spending time outdoors has proven physical and mental health benefits, from boosting vitamin D to improving mood. The Apple Watch tracks your daylight exposure, reminding you to step outside. The question is: does relying on tech to remind us to go outside make us less likely to do it naturally?

How to Set It Up: Ensure Motion Calibration & Distance is enabled in your iPhone’s Settings. View your daylight time in the Health app under Other Data.

7. State of Mind: Your Mental Health Companion
The Mindfulness app lets you log emotions and moods, helping you identify patterns in your mental health. But here’s the twist: while it’s a great tool for self-awareness, some argue that over-reliance on tech for mental health might replace human connection. What’s your take?

How to Set It Up: Use the State of Mind feature in the Mindfulness app to log your feelings. View trends in the Health app under Mental Wellbeing.

8. Sleep Apnea Notifications: A Silent Condition, No Longer Hidden
Sleep apnea affects over 1 billion people globally, often undiagnosed. The Apple Watch Series 9 and Ultra 2 can detect breathing disturbances during sleep, alerting you to potential issues. The controversy: While this feature is groundbreaking, it’s not a substitute for professional diagnosis. Would you trust it over a doctor’s opinion?

How to Set It Up: Set up Sleep in the Health app and wear your watch to bed for at least 10 nights over 30 days. Enable sleep apnea notifications under Respiratory.

9. Handwashing: A Pandemic-Inspired Feature
Introduced in 2020, the Handwashing feature ensures you wash your hands for the CDC-recommended 20 seconds. The debate: Is this feature still relevant post-pandemic, or does it feel like overkill? Share your thoughts!

How to Set It Up: Enable the Handwashing Timer in your Apple Watch’s Settings.

These features showcase how the Apple Watch is evolving into a comprehensive health tool. But remember, while tech can empower us, it’s no replacement for professional medical advice. What’s your favorite feature? Let us know in the comments!

9 Apple Watch Health Features You Need to Know About (2025)
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