![]() How useful is Garmin Body Battery? The answer depends very much on your personal use. Recognition: Lily Katz / Android Authority By and large, more stressful = a quickly drained battery, as you’d expect. This is derived from the HRV data, but it’s possible to see how the two metrics interact in the screenshots (above). Stress and activityĪccording to Garmin, HRV data is then combined with stress. This tends to correlate with physiological arousal, illness, toxicity, psychological stress, hunger, or incomplete recovery. If the heart rate doesn’t change as much as you exhale – if the variability is small – it indicates that the body is too stressed to calm down. This is indicated by a slight decrease in heart rate, which gives us “variability”. Usually, when we exhale, we become a little more parasympathetic, which means our body relaxes slightly. The sympathetic nervous system is responsible for the “fight or flight” response and is associated with increased heart rate, suppressed immunity, digestion and fear, among other things. ![]() The HRV is a useful measure of the dominance of the sympathetic nervous system. This information is used to generate a number between 1 and 100, with 100 being the maximum energy. According to Garmin’s website, Body Battery combines heart rate variability (HRV), stress, and activity data to calculate the user’s likely energy reserves. ![]()
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