Garmin’s Body Battery is a feature that calculates your body’s energy reserves throughout the day based on several factors. It uses heart rate variability, stress, and activity to calculate a
The algorithm of the sleep evaluation is based on movement patterns and (individual?) heart rate. Perhaps in your case the curve shifts with larger changes, and what was deep sleep before becomes light sleep. As satisfied as I am with the Vivoactive 3, the sleep analysis imho is hardly usable.
vivoactive 4 Series My Garmin vivoactive 4s has stopped turning on the back lights of the watch and does not detect heart rate
I had the same issue on mine, so I looked it up. It means that your heartrate has been elevated above your set treshold for 10 minutes, while resting. The treshold on mine is 100 beats per minute. I think this is the default. My resting heart rate is most often in the 45-55 range. My alert goes off 10-15 times a day.
Listening to Music. Open the music controls widget. Connect your Bluetooth® headphones ( Connecting Bluetooth Headphones). Hold the touchscreen to change the source. Select an option: To listen to music from a third-party provider, select the name of the provider. To listen to music downloaded to the watch from your computer, select My Music
Best heart monitor watches at a glance: Best heart monitor watches at a glance: Apple Watch Series 9 - £399, John Lewis. Best for heart rate tracking on a budget: Amazfit Bip U Pro - £59, Amazon
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garmin vivoactive 3 heart rate not working