Fast Like a Girl: Timing Your Diet to Your Hormones | Dr. Mindy Pelz

The School of Greatness

Every diet you've ever tried has failed you for one reason: it never told you when to eat.

Your body runs on two energy systems. One burns sugar. The other burns fat. Most people never spend a single day in the second one.

Around eight to ten hours without food, the switch flips. Ketones flood your brain. Hunger quiets. Mental clarity hits. Healing turns on. This is what fasting expert Dr. Mindy Pelz has been teaching for over 25 years, and what her book Fast Like a Girl made impossible to ignore.

For women, timing is everything. Day 1 to 10, fast longer and lift heavier. Day 11 to 15, testosterone surges and libido climbs. Day 16 to 19 is for deeper fasts. After day 20, progesterone needs you to back off and rest. Fast like a man during the back half of your cycle and you'll tank the very hormones keeping you calm and regular.

Underneath all of it sits the hormonal hierarchy. Oxytocin at the top. Cortisol below it. Then insulin. Then sex hormones. When you feel safe and connected, the whole stack works. When you don't, nothing else matters. Connection isn't optional for women. It's biology.

Dr. Mindy’s books:

In this episode you will:

  • Learn the fasting cycle for women, Dr. Mindy's day-by-day framework that syncs your fasting window, workout intensity, and food choices to your menstrual cycle
  • Uncover why your menstrual cycle is a monthly detox rather than a burden, and what an irregular or absent cycle is actually telling you about your body
  • Discover why timing your eating matters more than what you eat, and how the ketogenic energy system unlocks fat burning, mental clarity, and steady energy
  • Understand the hormonal hierarchy, how oxytocin, cortisol, insulin, and sex hormones stack on each other, and why female community and connection function as biological medicine
  • Find out what long-term birth control does to the gut microbiome and the brain-ovary connection, and why so many women struggle with hormonal imbalances after coming off the pill

For more information go to https://lewishowes.com/1928

For more Greatness text PODCAST to +1 (614) 350-3960

Follow The Daily Motivation for essential highlights from The School of Greatness

More SOG episodes we think you’ll love:

Glucose Goddess

Dr. Mary Claire Haver

Dr. Mark Hyman

Get More From Lewis!


Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

More description

Every diet you've ever tried has failed you for one reason: it never told you when to eat.

Your body runs on two energy systems. One burns sugar. The other burns fat. Most people never spend a single day in the second one.

Around eight to ten hours without food, the switch flips. Ketones flood your brain. Hunger quiets. Mental clarity hits. Healing turns on. This is what fasting expert Dr. Mindy Pelz has been teaching for over 25 years, and what her book Fast Like a Girl made impossible to ignore.

For women, timing is everything. Day 1 to 10, fast longer and lift heavier. Day 11 to 15, testosterone surges and libido climbs. Day 16 to 19 is for deeper fasts. After day 20, progesterone needs you to back off and rest. Fast like a man during the back half of your cycle and you'll tank the very hormones keeping you calm and regular.

Underneath all of it sits the hormonal hierarchy. Oxytocin at the top. Cortisol below it. Then insulin. Then sex hormones. When you feel safe and connected, the whole stack works. When you don't, nothing else matters. Connection isn't optional for women. It's biology.

Dr. Mindy’s books:

In this episode you will:

  • Learn the fasting cycle for women, Dr. Mindy's day-by-day framework that syncs your fasting window, workout intensity, and food choices to your menstrual cycle
  • Uncover why your menstrual cycle is a monthly detox rather than a burden, and what an irregular or absent cycle is actually telling you about your body
  • Discover why timing your eating matters more than what you eat, and how the ketogenic energy system unlocks fat burning, mental clarity, and steady energy
  • Understand the hormonal hierarchy, how oxytocin, cortisol, insulin, and sex hormones stack on each other, and why female community and connection function as biological medicine
  • Find out what long-term birth control does to the gut microbiome and the brain-ovary connection, and why so many women struggle with hormonal imbalances after coming off the pill

For more information go to https://lewishowes.com/1928

For more Greatness text PODCAST to +1 (614) 350-3960

Follow The Daily Motivation for essential highlights from The School of Greatness

More SOG episodes we think you’ll love:

Glucose Goddess

Dr. Mary Claire Haver

Dr. Mark Hyman

Get More From Lewis!


Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

2026-05-15 71 min
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