Your Body Is Giving You a Warning Sign—Most People Miss It

Physionic

Jun 6, 2025

Episode description

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0:00 - Introduction
3:15 - Heart Rate Variability in Cardiovascular Disease
4:35 - HRV in Healthy Individuals
5:45 - Critiques...
7:55 - What is a 'Low HRV'? How do we assess HRV?
10:40 - Keep 3 Things in Mind
11:58 - Main Points

References
[Study 459] Fang S-C, Wu Y-L, Tsai P-S. Heart rate variability and risk of all-cause death and cardiovascular events in patients with cardiovascular disease: a meta-analysis of cohort studies. Biol Res Nurs. 2019;21(6):540–551. doi:10.1177/1099800419877442

Funding/Conflicts: No Funding // No direct Conflicts of Interest

[Study 460] Jarczok MN, Weimer K, Braun C, William DP, Thayer JF, Gündel HO, Balint EM. Heart rate variability in the prediction of mortality: A systematic review and meta-analysis of healthy and patient populations. Neurosci Biobehav Rev. 2022;143:104915. doi:10.1016/j.neubiorev.2022.104915.

Funding/Conflicts: No Funding // No direct Conflicts of Interest

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#hrv #heartratevariability

Episode description

Mindsip insights from this episode:

Average HRV readings daily for accurate baseline assessment

To get an accurate sense of your baseline, you should measure your HRV multiple times across several days and average the results, as a single day can be misleading.

#HRV

Monitor heart rate variability to assess vagal tone

Heart rate variability is a direct indicator of your 'vagal tone,' which is the activity of the vagus nerve that helps regulate your heart rhythm and inflammation.

#HRV

#vagus-nerve

Maintain HRV above 20 milliseconds to lower mortality risk

An HRV reading above 20 milliseconds, as measured by RMSSD on wearables like an Apple Watch or Oura Ring, indicates a lower risk of mortality.

#HRV

#mortality

Understand heart's natural pacemaker and its rhythm

If your heart were removed from your body, it would actually beat faster (around 100 bpm) because the vagus nerve would no longer be present to slow it down.

#heart

#vagus-nerve

Critique HRV studies for flawed mortality links

Many scientific analyses linking HRV to mortality are weak due to poor control for factors like age and inconsistent measurement methods across the included studies.

#HRV

#mortality

Track RMSSD for effective heart rate variability monitoring

When using consumer wearables like an Apple Watch or Oura Ring, the most common and relevant HRV measurement to track is RMSSD.

#HRV

#wearables

Understand HRV as a health signal, not a disease diagnosis

A good HRV reading is a positive signal of general health, but it does not guarantee the absence of specific diseases like cancer or cardiovascular disease.

#HRV

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