Welcome to the WHOOP Research Series, where we breakdown into the extensive, scientific research conducted by the WHOOP Performance Science team. On this week’s episode, WHOOP Global Head of Human Performance, Principal Scientist, Dr. Kristen Holmes sits down with WHOOP Senior Research Scientist Dr. Greg Grosicki to unpack the latest WHOOP Research Study on Heart Rate Variability Coefficient of Variation or HRV-CV. Using data from 21,000+ WHOOP members and 2 million nights of sleep, Dr. Holmes and Dr. Grosicki reveal why day-to-day stability in your HRV may matter more than the number itself. HRV-CV proves to outperform traditional metrics in detecting the real impact of alcohol, sleep consistency, and metabolic health, making it a great measure of healthspan. By looking deeper into the study, Dr. Holmes and Dr. Grosicki explains how HRV-CV can help you program your training smarter, improve your healthspan and build autonomic resilience. This episode unpacks how measuring HRV-CV isn’t just about performance, but risk stratification and understanding your physiology over-time, not just day-to-day.

(01:11) Intro To The Study: Why Is HRV-CV Important?

(04:09) HRV-CV and Risk Stratification

(08:28) Definition of HRV-CV

(11:40) What HRV-CV Indicates in Athlete Recovery

(14:26) Breaking Down The WHOOP Study

(17:13) HRV-CV Trends in Shift Workers

(21:21) Why Is HRV-CV an Important Biomarker?

(25:18) HRV-CV Trends in Individuals on GLP-1 Medications

(26:29) The Weather vs. The Climate: HRV vs. HRV-CV

(33:41) The Results: Breaking Down the Data

(36:37) How HRV-CV Responds to Certain Behaviors

(39:38) Trends Between HRV-CV Between Age, Biological Sex, and Body Mass Index

(49:54) How To Improve HRV-CV

(56:39) New Research Roles and Opportunities at WHOOP

References:

American Journal of Physiology Publication

HRV-CV: The Key Metric for Lifestyle Consistency and Stability

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On this months edition of The WHOOP Podcast, WHOOP SVP of Research, Algorithms, and Data Emily Capodilupo sits down with longevity researcher and bioethicist Dr. Raiany Romanni-Klein to explore how society should be handling aging.

Dr. Romanni-Klein breaks down why aging may be the most underfunded and misunderstood driver of suffering in modern society, and why treating it as a solvable biological problem could transform our economy, healthcare system, and future. From the ethics of longevity to the policy failures slowing innovation, Dr. Rommani-Klein explains that extending healthspan is all about reducing disease, caregiver burden, and economic strain.

The conversation dives into the science and economics of aging, including why brain health may offer the highest return on investment, the opportunities of the pharmaceutical industry in creating longevity drugs, and why exercise and diet remain the most powerful longevity tools we have today. Emily and Dr. Rommani-Klein the regulatory and incentive barriers preventing large-scale aging trials and what would need to change for society to treat aging as a disease.

(00:33) Introduction to Dr. Raiany Romanni-Klein

(01:17) Where Is The Intersection of Ethics and Longevity Science?

(02:05) The Aging Population and Reduced Birth Rates

(04:31) WHOOP Podcast Rapid Fire Q’s

(07:42) Ethics Around Technological Evolution: What Is Best For Longevity & Society

(11:41) Changing Perspectives on Longevity

(17:42) What Biomarkers Are Important For Longevity

(22:09) Incentives For Pharmaceutical Companies to Invest In Longevity Science

(24:51) Do People Have The Agency To Extend Healthspan?

(27:16) Policy Issues Affecting Longevity

(34:18) The Influence of Longevity Drugs Like GLP-1s

(42:10) Is There A Better System The US Should Be Following?

(45:17) What More People Need To Know About Longevity Science

(46:27) Running Models and Simulations To Understand Longevity

(53:22) The Future of Longevity Science: What Excites Dr. Romani-Klein

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In this month’s edition of the How To Series, WHOOP Founder & CEO Will Ahmed sits down with one of the world’s most dominant cyclists, Mathieu van der Poel. Will and van der Poel sit down to unpack how to perform across disciplines, sustain longevity in elite-level sport, and embrace suffering for greatness.

Van der Poel shares his training philosophy, what motivates him to push through the toughest moments of a race, and how he uses WHOOP data to optimize recovery. From sleep habits, to caffeine consumption, to strength training, and key recovery habits, van der Poel offers an inside look at how listening to his body and staying consistent drives performance.

The conversation reflects the highs and lows of van der Poel's career, from battling pneumonia at the Tour de France, to the impact his long-term team has made on his career, to the role of fierce rivalries in pushing him to the next level. This episode offers an exclusive look into the mindset it takes to be one of the best endurance athletes in the world.

(00:40) Mathieu van der Poel on Versatility as a Cyclist

(03:21) Aspiring To Go Pro: van der Poel’s Upbringing in Cycling

(04:36) Measuring Success In Cycling

(05:55) Skills and Metrics Needed To Gain Power Over The Competition

(08:06) A Week In Training To Gain Endurance

(09:13) Essential Recovery Techniques

(11:12) Learning To Enjoy The Suffering in Training

(13:28) Overcoming Setbacks: Pneumonia & Tour de France

(15:10) Importance Of Building A Supportive Team

(16:32) Mathieu’s Motivations: Favorite Races & Inspiration In Sport

(20:23) Turning To The Data: Monitoring Metrics Throughout The Race

(23:55) Strength Training As A Cyclist & Mitigating Injury

(27:39) A Look Ahead: Exciting New Steps in van der Poel’s Career
(29:00) Nutrition & Intuitive Eating Before, During, and After Race Day

(30:00) Visualization and Mindset’s Role In Cycling Success

(30:35) WHOOP Podcast Rapid Fire Qs

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