Heart Rate Variability (HRV) provides insights to help you quantify stress, better balance training and lifestyle, and improve performance.   Marco Altini (PhD, MSc) has 50 publications+ and a few patents at the intersection between technology, health, and performance. He is the founder of HRV4Training (Heart Rate Variability), an app I use daily. He is also a data science advisor at Oura; a wearable ring and app to optimize how you sleep, workout and recover. He is also a strong non-elite runner!   Watch this full interview on YouTube: https://youtu.be/vvtU_IK8JkI  CHAPTERS: 00:00 HRV to handle load better 01:08 Sponsor: PATH projects and LMNT 2:34 Explaining Heart Rate Variability 6:30 How to measure HRV 16:06 Improving HRV 22:51 Sleep 23:37 Marco integrating HRV data into his own training 27:56 Breath work and breathing 36:04 HRV: guided versus dictated 41:24 Examples from Floris’ training 46:43 Tapering for events 51:08 Positive stress and the limitations of data 52:01 Developments in non-invasive wearables 54:58 Find out more about Marco 56:46 Closing thoughts   FIND MARCO HERE: ► Twitter - https://twitter.com/altini_marco   ► Substack - https://marcoaltini.substack.com/  ► Instagram - https://www.instagram.com/altini_marco/  ► Website - https://www.marcoaltini.com/    LINKS AND TOOLS MENTIONED ► Website - https://www.hrv4training.com/ ► App (search) - HRV4Training ► Jason Koop podcast with Marco Altini - https://bit.ly/3q57cRp  ► Oura ring - https://ouraring.com/ ► Josh Waitzkin website - https://www.joshwaitzkin.com/ ► Tim Ferriss website - https://tim.blog/ ► Joe Dispenza website - https://drjoedispenza.com/  ► Dr. Stephen Seiler on 80/20 Training | Extramilest Show #50 - https://bit.ly/3pIOWx4   YOU CAN FIND ME, FLORIS GIERMAN HERE: ► Podcast: https://extramilest.com/podcast ► Personal Best Program: https://www.pbprogram.com  ► My weekly newsletter: https://extramilest.com/subscribe  ► Strava: https://www.strava.com/athletes/1329785  ► Instagram: https://www.instagram.com/florisgierman  ► Website: https://extramilest.com  ► Website: https://pathprojects.com    Thanks to PATH projects and LMNT for sponsoring this episode! Visit PATHprojects.com/flo to learn more about my favorite apparel for training, racing and life. Also, head to http://DrinkLMNT.com/FLO to get your free sample pack with any purchase.   Affiliate Disclosure: I may earn commissions if you purchase items via my affiliate links. "As an Associate I earn from qualifying purchases.” Affiliate links do not increase cost to you. Also, you do not need to use these links. You can also search for these same items in Amazon or on any search engine/shopping site of your choice and buy/research them that way.   ABOUT THE EXTRAMILEST SHOW:  A podcast and YouTube channel where host Floris Gierman interviews world class athletes, coaches and health experts on the topic of how to become a stronger, healthier and happier athlete.   🚨 GIVEAWAY!! Win a box of LMNT Electrolyte Drink Mix. To enter, subscribe to my YouTube channel & comment: what was your favorite takeaway, lesson or quote from this video? 1 winner will be picked by September 30th from the YouTube comments.   To learn more about our running coaching program, from 5k to marathons and ultra distances, visit https://www.pbprogram.com