The Optispan Podcast with Matt Kaeberlein You Might Have The Heart Attack Gene. Here Are The Signs
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Nov 4, 2025 Joel Jamison, a coach and fitness expert, shares his personal heart-health journey, including a shocking calcium score that revealed significant health risks. The discussion dives into the nuances of heart rate variability (HRV), contrasting the needs for athletes versus those focused on longevity. Joel also emphasizes the importance of advanced imaging over standard tests for individuals with family histories of heart disease. Plus, he challenges the accuracy of wearable tech in measuring vital health metrics, urging early screening for those at risk.
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Chronotype Beats Wake-Up Time
- Waking time alone doesn't determine sleep quality or HRV; chronotype and bedtime matter more.
- People perform best when aligned with their natural circadian rhythm rather than forced schedules.
Don't Measure HRV Without Proper Tech
- You cannot reliably measure HRV without electronic beat-to-beat measurement; use devices that capture R-R intervals precisely.
- If you lack HRV tech, use resting heart rate or orthostatic tests as crude proxies for autonomic state.
Standardize Morning HRV Measurements
- Standardize HRV measurements: sit still, be relaxed, and measure first thing after waking with a short stabilization period.
- Wait until your heart rate returns to your normal resting range before starting the recording.