What are stress and energy calculating based on
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Written by Mark
Updated over a week ago

We calculate stress and energy based on the evaluation of heart rate variability (HRV). Heart rate variability shows the variation in the time intervals between heartbeats (RR intervals).

For a person with a pulse of 60 beats per minute, the RR-intervals look something like this: 0.83 s., 1.31 s., 0.73 s., etc.

Sample of a cardiogram showing intervals between heartbeats in milliseconds

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