From 60 to 134 HRV: The Habits Behind Peak Human Performance with Dr Kristen Holmes
High Performance HealthShow Notes
She more than doubled her HRV in under a decade, and the behaviour that moved it most was not training, supplements or sleep duration, but going to bed and waking at the same time.
This week I sat down with Global Head of Human Performance at WHOOP and author of Aligned, Dr Kristen Holmes, to unpack why sleep-wake consistency is the foundation of a resilient nervous system in midlife.
WHAT YOU WILL LEARN
- Why is sleep-wake consistency a stronger predictor of mortality and disease than how long you sleep?
- How does the contrast between your day and your night affect the severity of menopause symptoms?
- What is the physiological sigh, and why did it outperform other anxiety-reducing techniques in the research?
- Can you really raise your HRV, and how much of it is genetic rather than modifiable?
- Why does eating late at night suppress both sleep quality and overnight recovery?
- Why do unresolved trauma and an outcome-driven identity keep your nervous system stuck in fight or flight?
TIMESTAMPS
00:00 The One Behaviour That Steadies a Midlife Nervous System
09:12 Why Day and Night Contrast Predicts Milder Menopause Symptoms
17:21 The Physiological Sigh, Winter Light and Why Late Meals Wreck Recovery
26:44 Data or Intuition: Using Your Numbers Without Becoming Obsessed
34:54 The Five Habits Behind a Doubled HRV
44:11 Falling Asleep at the Wheel: The Crash That Rebuilt Her Life
52:30 Unresolved Trauma, Fear and an Identity Wrapped Around Outcomes
01:00:53 Living by Your Values When Willpower Runs Out
VALUABLE RESOURCES
Aligned: The Data-driven Guide to Performance, Recovery, and Human Potential by Dr Kristen Holmes: https://www.penguin.co.uk/books/468591/aligned-by-holmes-kristen/9781529146981
Explore Dr Kristen's work: https://drkristenholmes.com/
Track your recovery with WHOOP: https://www.whoop.com/
A BIG thank you to our sponsor who makes the show possible:
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ABOUT THE GUEST
Dr Kristen Holmes is Global Head of Human Performance and Principal Scientist at WHOOP, where she studies how sleep, circadian alignment and recovery shape performance. A former US National Field Hockey Team player and one of the most successful coaches in Ivy League history, she holds a PhD and is the author of Aligned, a data-driven guide to recovery and human potential.
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👩💼 About Me:
Angela Foster is a corporate lawyer turned health and performance coach, keynote speaker, and creator of the BioSyncing:registered: Method. Host of the High Performance Health Podcast with 500+ episodes featuring world-leading experts in longevity, hormones, neuroscience, and female perfor
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