Kristen Holmes: "Not Getting Enough Sleep? You Will Die Faster - The Key to Better Sleep Isn’t Just What You Do At Night."

In this episode of In Your Skin, we sit down with Kristen Holmes, Global Head of Human Performance and Principal Scientist at WHOOP. As a psychophysiologist, she studies the intricate relationship between psychological processes and physiological responses—particularly how sleep impacts everything from longevity to mental health and metabolism. Kristen unpacks the science behind circadian rhythms, the dangers of sleep debt, and why consistency in sleep patterns matters more than duration. She also shares practical insights on optimising sleep, the impact of light exposure, and how women’s hormonal cycles affect sleep quality. If you’ve ever struggled with sleep, felt exhausted despite getting “enough” rest, or wondered how to align your lifestyle with your body’s natural rhythms, this episode is packed with game-changing insights. Episode Breakdown: 0:00 – The science of circadian rhythms and why sleep consistency matters 4:45 – How modern life disrupts our natural sleep cycles 8:10 – Sleep debt: what it is and why it shortens your lifespan 12:30 – Why night owls have a higher risk of metabolic dysfunction 16:50 – The role of light exposure in setting your sleep-wake cycle 21:00 – How stress perception affects sleep and recovery 25:30 – The surprising link between sleep, gut health, and hormone regulation 30:15 – Why women are more sensitive to sleep deprivation than men 34:40 – Practical tips to improve sleep quality and energy levels 38:50 – Can you "catch up" on lost sleep? What the science says 42:15 – How WHOOP tracks sleep and helps optimise recovery 46:20 – Where to find Kristen Holmes’ work and insights The episode is proudly sponsored by Whoop Get one-month free membership at www.join.whoop.com/InYourSkin 🔔 Don’t forget to like, comment, and subscribe for more episodes Connect with us on Instagram @inyourskin.podcast Connect with Kristen on Instagram @kristen_holmes2126 Find out more about WHOOP at whoop.com Learn more about your ad choices. Visit megaphone.fm/adchoices