“Heart Rate Variability (HRV) is the difference in time between heartbeats. It indicates how your autonomic nervous system functions & can provide valuable information to help prevent PEM/PESE…Learn how to track your HRV & interpret the info here”

https://batemanhornecenter.org/wp-content/uploads/2023/05/Heart-Rate-Variability-HRV.pdf

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 @0ecd8d1a @4183a04c @3a447f2a 

Thank you for this great information. 

I struggle to understand it though. My device show a very low "stress level" during my sleep, and high during the day (see picture)

Does it mean that the device and its program translates the low HRV in "high stress" and the high HRV in "low stress"?

https://assets.disabled.social/media_attachments/files/111/058/687/163/590/289/original/72da0aef8905d15b.png