[Bonus Episode] Science-Backed Strategies to Succeed With Intermittent Fasting With Cynthia Thurlow

15 Dec 2025 · 40 min
Episode

15 Dec 2025 · 40 min

0:00

This bonus podcast episode (JJ Virgin with guest Cynthia Thurlow) focuses on science-backed strategies for intermittent fasting with an emphasis on women’s physiology. Cynthia explains why women differ from men in fasting tolerance (hormone sensitivity, cycling vs. menopausal states), outlines benefits of fasting (lowered insulin, fat adaptation, ketone use, autophagy, improved cognition, potential weight loss and menstrual improvements), and recommends practical steps: remove snacks first, prioritize protein and healthy fats, and gradually extend fasting windows (e.g., achieving 12–14+ hours overnight). She connects fasting with sleep and stress management—stressing sleep hygiene (cold/dark room, reduced blue light), box breathing (4s inhale/hold/exhale), appropriate macros before bed, and addressing underlying causes (mold, hormones). Episode includes meal guidance (4–6 oz animal protein, non-starchy vegetables, strategic fats), cautions about overusing melatonin (many supplements exceed endogenous production), and encourages slow, individualized implementation. Cynthia gifts listeners a sleep e-book (normally $29) via jjvirgin.com/fastsleep. The episode also contains multiple sponsor ad reads (Earth Breeze, Wayfair, Monarch, Ray-Ban/Meta, Chrysler, Walgreens).

Questions this episode answers

April 24, 2021

About 16 times per day

Inhale 4 seconds, hold 4 seconds, exhale 4 seconds (repeat 4–5 sets)

She states the body secretes less than 1 milligram endogenously, while many supplements provide 3–10 mg

Normally $29; available to listeners at jjvirgin.com/fastsleep

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