Hi
When you record a workout using the built-in Workout app, your heart rate will be measured continuously throughout the workout. During workouts, you can also choose which primary metric is shown on your watch face, with choices including heart rate. At the end of the workout, results include heart rate data. Workouts are also saved to the Activity app on your iPhone.
During the workout, to change the main metric shown on the watch face, swipe sideways on it. Depending upon your activity type, choices may include: elapsed time, active calories, total calories, heart rate, pace, speed and distance.
More information:
Use the Workout app on your Apple Watch - Apple Support
Use the Activity app on your Apple Watch - Apple Support
Health and fitness data from Apple Watch, iPhone and other sources is also aggregated within the Health app on iPhone. Combined data is reflected in the Health app Dashboard, which adjusts results to avoid any double counting of data from different sources.
To see heart rate data from Apple Watch and any other sources (eg a Bluetooth chest strap monitor):
- On your iPhone, in the Health app (icon has a red heart on a white background), go to: Health Data (tab) > Vitals > Heart Rate.
Data is shown in chart form (this can be added to the Health app Dashboard by enabling the setting here) and also as individual data points (via Show All Data).
