Heart Rate Variability or HRV is a well-known measure outside sport for a long time. &nbsp;However in the past, it required ECG to find HRV. &nbsp;In the recent times, it has become more accessible because of wearables like those from Garmin, Whoop, Apple, Oura etc., HRV as a metric is super useful for runners, as it is linked to parasympathetic nervous system (PNS). &nbsp;PNS is responsible for rest and recovery. &nbsp;
In this episode we explore HRV
<ul>
 <li>What is HRV?</li>
 <li>What does it mean for runners?</li>
 <li>How is it different from resting HR?</li>
 <li>How does one measure it?</li>
 <li>How can we use it in training?</li>
</ul>
Here are some HRV related resources, that we've found useful. 
 
<a href="https://support.garmin.com/en-US/?faq=04pnPSBTYSAYL9FylZoUl5">Garmin GPS watches that support direct measurement of HRV&nbsp;</a>
<a href="https://support.garmin.com/en-US/?faq=04pnPSBTYSAYL9FylZoUl5">Garmin ConnectIQ app for HRV measurement in older watches</a>
<a href="https://www.hrv4training.com">HRV4 Training</a> - Smartphone App for - measuring HRV without any additional sensors, and tracking training load/recovery to tune training
<a href="https://www.thieme-connect.com/products/ejournals/abstract/10.1055/s-0030-1249625">HRV in response to exercise</a>
<a href="http://gymnica.upol.cz/artkey/gym-201101-0001_autonomic_nervous_system_activity_assessment_in_recreational_half_marathon_runners.php">Race Anxiety and Effects on HRV</a>

World Marathon Majors

If you are a runner, and always seeking out to science and tech to run better, you sure want to tune into "A &amp; D talk running" podcast. A &amp; D, Aravind and Dilip, are runners who are keen on science and tech. Dilip is a tech entrepreneur, and a sub 3-hour marathoner; Aravind is a tech professional, and co-founder of Geeksonfeet.com, India's leading running community portal.