How can I change the measurement frequency on WearOS and Samsung Galaxy watches?

Increasing the sampling rate can affect the battery runtime on your watch. 

Open the Cardiogram app on your watch and swipe left twice to see "Background measurements." Here, you can adjust how frequently the Cardiogram app measures heart rate using your watch.

Adjusting the measurement frequency will not increase the sync frequency - data is sent from the Cardiogram watch app to your phone every 15 minutes or when the phone app is opened.

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