The Dr. Greg Show
If you hit 3 p.m. and feel like your brain and body just… power down, you’re not lazy, and you’re not broken. In this episode, Dr. Greg breaks down the most common root causes behind the afternoon crash in perimenopause, including a low or unstable cortisol curve (especially a weak Cortisol Awakening Response), blood sugar spikes and crashes, mitochondrial energy disruption, and hidden inflammation from stress, infections, or toxicity. You’ll learn what “normal labs” often miss, why fatigue is a pattern (not a personal failure), and the simple, practical shifts that can dramatically improve afternoon energy without relying on caffeine to drag you across the finish line. Key Takeaways * The body responds appropriately to its environment, fatigue is information * A weak Cortisol Awakening Response can set you up to feel drained all day and crash hard in the afternoon * Blood sugar instability (often worsened in perimenopause) can trigger the 3 p.m. shutdown * Estrogen shifts can impact mitochondrial energy production, contributing to afternoon fatigue * Chronic inflammation (from stress, infection, or toxic load) can reduce mitochondrial efficiency and drain energy * “Normal” labs don’t always reflect optimal function, fatigue requires pattern-based thinking across systems * Small morning routine shifts can create big afternoon energy wins What You Can Start Doing Today * Protein early: 20–30g within the first hour of waking, with a little healthy fat * Morning light reset: 2 minutes of outdoor light exposure (not staring at the sun, just letting light hit your eyes) * Move mini bursts: 3–5 minutes of movement every ~90 minutes to support circulation, lymph, gut motility, and brain blood flow * Hydration + minerals: aim for roughly half your bodyweight in ounces of water per day, add mineral support if needed * Pattern mapping: track when the crash hits (time, meals, caffeine timing, stress, sleep) and use “pattern interrupts” before it happens Resources & Next Steps Pre-Order “Power Over Perimenopause”: https://go.drgreghealth.com/power-over-perimenopause Hormone Symptom Tracker:https://drgreg.practicebetter.io/#/5e8a349a2a982306d08c1c14/forms?f=6807f2f8c009a18d7c98e558 [https://drgreg.practicebetter.io/#/5e8a349a2a982306d08c1c14/forms?f=6807f2f8c009a18d7c98e558] Ask Dr. Greg a Question / Contact the Team: support@vitaefm.com Functional Testing & Care Options: https://www.vitaefm.com [https://www.vitaefm.com] Keywords perimenopause fatigue, afternoon crash, 3pm crash, cortisol curve, cortisol awakening response, blood sugar crash, insulin resistance, mitochondrial dysfunction, chronic inflammation, adrenal rhythm, perimenopause energy, women’s hormones, functional medicine, Dr Greg Mongeon, women’s health podcast
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