In this episode, Joe interviews Dr. Andrew Ahn, an internal medicine physician and expert in physiological signal analysis.

The central topic of discussion is Heart Rate Variability (HRV). Dr. Ahn describes various measures of HRV, including time-domain, frequency-domain, and nonlinear analysis. He shares insights into personal HRV tracking and the lifestyle factors that influence it, such as exercise, sleep, and stress.

The conversation delves into the effectiveness of wearable devices for HRV measurement and explores breathing techniques that can improve HRV.

Additionally, Joe and Dr. Ahn discuss the role of genetics in HRV and the potential benefits and challenges of personalized health optimization through data-driven approaches.

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