Heart health notifications on your Apple Watch
High and low heart rate notifications
On your iPhone, open the Apple Watch app. Tap the My Watch tab, then tap Heart. Tap High Heart Rate, then choose a BPM. Tap Low Heart Rate, then choose a BPM.
![watchos-9-series-7-high-heart-rate-notification](https://cdsassets.apple.com/live/7WUAS350/images/apple-watch/watchos-9-series-7-high-heart-rate-notification.png)
Irregular rhythm notifications
Here's what you need to enable irregular rhythm notifications
Make sure that notifications are available in your country or region. Learn where irregular rhythm notifications are available . Update your iPhone to the latest version of iOS and Apple Watch to the latest version of watchOS . These notifications are not designed for people who have been diagnosed with AFib. These notifications are not intended for use by people under 22 years old. AFib History must not be enabled.
How to enable irregular rhythm notifications
Make sure that the software on your iPhone and Apple Watch is up to date. On your iPhone, open the Health app. Tap the Browse tab, then go to Heart > Irregular Rhythm Notifications. Once enabled, you can turn irregular rhythm notifications on or off in the Apple Watch app on your iPhone: Open the Apple Watch app, tap the My Watch tab, then go to Heart > Irregular Rhythm.
![ios-16-iphone-13-pro-watch-heart-ecg-settings](https://cdsassets.apple.com/live/7WUAS350/images/apple-watch/ios-16-iphone-13-pro-watch-heart-ecg-settings.png)
What to do when you receive an alert
How irregular rhythm notifications work
About AFib
Things you should know
If Low Power Mode is turned on, you won't receive any high or low heart rate or irregular rhythm notifications. Learn more about Low Power Mode . Apple Watch cannot detect heart attacks. If you ever experience chest pain, pressure, tightness, or what you think is a heart attack, call emergency services immediately. The irregular rhythm notification feature on Apple Watch is not constantly looking for AFib. This means it cannot detect all instances of AFib, and people with AFib may not get a notification. If you’re not feeling well, you should talk to your doctor even if you don’t get a notification. Symptoms such as a rapid, pounding, or fluttering heartbeat, dizziness, or fainting, can indicate a serious condition. Do not change your medication without talking to your doctor. In some instances, the notification may indicate the presence of an irregular heart rhythm other than AFib.