Know Body Podcast

Welcome to a transformative journey that dives deep into the thing that influences every moment of your life- your body. We aim to provide clarity on how your body works using simple language and easily understood concepts. Understanding how your body works helps you see the way your daily choices are adding or detracting from your fitness, health, and longevity, making those choices easier to make.

Know Body Podcast is a health podcast hosted by with Dennis Fenrich, with 53 episodes on record and a Required Pod Score of 80. PitchCentric scores this show on Booking Probability, Listen Score, and live audience signals refreshed every 24 hours.

with Dennis Fenrich hosts Know Body Podcast, a health show with 53 episodes published.

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  Episode #52

  Episode 52 | A Year in Review: Wins, Lessons, and What's Next

  Oct 6, 202556 minS0

  <p>Episode 52 is a wide-ranging year-in-review where your host celebrates hitting the one-episode-per-week goal, shares production hiccups, and reflects on the biggest takeaways from 52 episodes. Expect honest behind-the-scenes moments (camera focus and audio snafus), subscriber metrics, and a candid update about taking a month off to rethink the podcast schedule and creative direction.</p><p><br></p><p>This episode recaps core themes from the year: nutrition (quality vs. quantity and the idea of an optimal "replacement rate"), the dual sides of metabolism (energy production and cellular replication), and a clear breakdown of exercise as a signal (strength, cardiorespiratory conditioning...

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  Know Body Podcast

  Ep 51 | Why We Sleep: How REM Dreams Heal Trauma and Recalibrate Emotion

  Sep 29, 202553 minS0

  <p>In this episode, the host dives into chapters 9 and 10 of Matthew Walker, PhD’s Why We Sleep to unpack what happens in REM sleep, how dreaming differs from non‑REM mental activity, and why dreams may be more than mere byproducts. The episode traces the technological shift from scalp electrodes to MRI brain imaging and explains the surprising, region‑specific activity that characterizes REM: heightened visual, motor, hippocampal (memory), and emotional (amygdala/cingulate) centers alongside deactivation of parts of the prefrontal cortex.</p><p>Key researchers discussed include Matthew Walker (author and sleep scientist), Daniela Stickgold and Rosalind Cartwright (resear...

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  Know Body Podcast

  Ep 50 | Stress Signals: What Your Body Is Trying to Tell You

  Sep 29, 202544 minS0

  <p>In Episode 51, I walk you through the biology and practical management of stress. Using a ChatGPT-generated outline as a guide, I cover the science behind the sympathetic (fight-or-flight) and parasympathetic (rest-and-digest) systems, why stress matters, and how chronic stress affects inflammation, recovery, and overall health. I mix in research-backed explanations with personal anecdotes — from jaw clenching, headaches, and digestive upset to racing thoughts, sleep problems, and cravings — to highlight common physical, emotional, and behavioral stress signals.</p><p>The episode offers actionable tools to decode and reset stress: journaling and awareness prompts, quick, immediate resets like box breathing and gent...

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  Episode #49

  Ep 49 | Hidden Messengers: Hack Your Hormones with Simple Daily Wins

  Sep 15, 202545 minS0

  <p>Episode 49: Host Dennis Fenrich (with AI-assisted scripting) demystifies hormones — the silent chemical messengers that control your energy, mood, cravings and body composition. With a mix of listener-friendly explanations, technical notes and personal anecdotes (plus the occasional Liquid Death sip), Dennis walks through what hormones are, how they communicate, and why they matter.</p><p>The episode introduces five core hormones — cortisol (stress manager), insulin (energy traffic cop), leptin (satiety signal), ghrelin (hunger hormone), and the sex steroids estrogen and testosterone — explaining both simple, everyday descriptions and concise technical functions. Dennis also highlights how the environment and daily choices shape these...

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  Episode #48

  Ep 48 | Why We Sleep: Deep Science, Insights, and Sleep Debt

  Sep 8, 202552 minS0

  <p>Episode 48 dives into Matthew Walker's bestseller Why We Sleep with host Dennis Fenrich (solo episode). This installment covers Chapters 1–2 and mixes science, personal anecdotes, and practical takeaways. Expect a conversational, sometimes humorous walkthrough as the host teases later chapters on dreaming and treatments.</p><p>The episode reviews what sleep does for body and brain — learning, memory, emotion regulation, immune and metabolic health, appetite control, cardiovascular fitness, and even the gut microbiome. Dennis outlines the book’s four-part structure and previews upcoming topics including dreams, sleep disorders, and non-drug therapies.</p><p>Key science highlights include the landmark Mammoth Cave e...

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