Track important health information with Apple Watch
Your Apple Watch can help you meet your sleep goals, track important information related to your heart, keep a log of your emotions and mood, log your medications, and track your menstrual cycle.
Prioritize your sleep
With the Sleep app on Apple Watch, you can create a sleep schedule, set a sleep duration goal, and review your recent sleep history. You can even see estimates of how much time you spent in REM, Core, or Deep sleep, as well as when you might have woken up. While you sleep, Apple Watch also tracks metrics like blood oxygen, heart rate, time asleep, respiratory rate, and on Apple Watch Series 8 and Apple Watch Series 9, wrist temperature. To get started, open the Sleep app on your Apple Watch and follow the onscreen instructions. Then wear your watch to bed and Apple Watch does the rest.
Get heart health notifications
You can enable notifications from the Heart Rate app 
on your Apple Watch to alert you to high or low heart rates, as well as irregular heart rhythms that may be suggestive of atrial fibrillation (AFib). If you have already been diagnosed with AFib, you can turn on AFib History to see an estimate of how frequently your heart is in this arrhythmia. You can also turn on alerts for low cardio fitness.
Stay on top of your medications
The Medications app helps you keep track of your medications, vitamins, and supplements. Just add your medications to the Health app on your iPhone and log them on your Apple Watch.
Log your state of mind
In addition to offering opportunities to breathe mindfully and promote moments of reflection, the Mindfulness app 
can help you build emotional awareness and resilience by identifying your feelings. Just open the Mindfulness app, tap State of Mind, then log your momentary emotions and daily moods.
Track your menstrual cycle
Use the Cycle Tracking app 
to log daily information about your menstrual cycle. Your Apple Watch uses that information to provide period and fertile window predictions. In addition to data you’ve logged, Cycle Tracking can use heart rate data to improve predictions. If you wear Apple Watch Series 8 or Apple Watch Series 9 to sleep each night, the app can use wrist temperature to improve period predictions and provide retrospective ovulation estimates.
Note: The retrospective ovulation estimates feature is not available in all regions.
Want to learn more? Start with Track your sleep with Apple Watch, Check your heart rate, Track your medications on Apple Watch, Log your state of mind on Apple Watch, and Use Cycle Tracking on Apple Watch.
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