With each passing day, more and more athletes are choosing to monitor their heart rate variability (HRV). No one deserves more credit for this trend than Marco Altini, PhD, creator of the industry-leading HRV4Training smartphone app. We’ll have to invite Marco back on the podcast another time to get his life story, but in this interview Matt and Hanna maintain a laser focus on the main topic, receiving a lucid and comprehensive education in heart rate variability from the man who knows more about it than anyone else. Whether you’re already monitoring HRV and want to get out of it or you’re wondering what all the fuss is about and want to learn more before you commit, this episode is a must-listen.Connect With Marco:https://www.marcoaltini.com/TwitterInstagramConnect With Us:Hanna  @hannadoesfitness, Hanna's JamsMatt @fitzgerald.matt, Matt's Jams@8020enduranceSign up for the 80/20 Endurance Newsletter hereOffers:The Endurance Event | Our online event designed to share the latest ideas and best practices in endurance training and technology, brought to you by the biggest names in endurance sportsInsideTracker | Get 25% off the entire InsideTracker store at insidetracker.com/eightytwentyEndeavorun Training Camps | use code 8020PODCAST for $150 off Austin, TX and/or San Diego Training Camp(s)