Cycle Fasting for Women “Fast like a girl”

Cycle Fasting for Women “Fast like a girl”

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Cycle Fasting for Women “Fast like a girl”

Bag 30 Oct 2023

As the world of health and wellness continually evolves, it’s essential to explore new approaches that align with our unique needs. One such approach gaining popularity is cycle fasting, a strategy that tailors fasting to women’s hormonal cycles. In this article, we delve into the science of fasting and women’s hormonal cycles; based on the book “Fast Like a girl” by Dr. Mindy Pelz, a well-known expert on women and fasting. 

Explore the Science of Fasting and Women’s Hormonal Cycles: Going Beyond Traditional Dieting

Traditional dieting often takes a one-size-fits-all approach, paying little attention to the intricate dance of hormones within a woman’s body. However, recent research has shed light on the profound impact of fasting and nutrient timing on women’s health, particularly when synchronized with their hormonal cycles.

The female body operates on a monthly rhythm driven by hormonal fluctuations. From the first day of menstruation to the onset of the next period, women experience four distinct phases: the power phase, the manifestation phase, the second power phase, and the nurture phase. Each phase brings unique changes in hormone levels, metabolism, and energy needs.

Synchronize Fasting with the Female Hormonal Cycle

Cycle fasting recognizes the importance of aligning fasting practices with these hormonal fluctuations. By doing so, women can optimize their energy levels, metabolism, and overall well-being throughout the month.

  • Power Phase (Days 1-10): During the first ten days of the cycle, fasting can be more extended, ranging from 13 to 72 hours. This aligns with the period when estrogen levels are rising, promoting muscle growth and fat burning. It’s an excellent time for more extended fasting, which may help reset insulin sensitivity and support weight management.
  • Manifestation Phase (Days 11-15): As the power phase transitions into the manifestation phase, fasting periods should become shorter, ideally lasting between 13 to 15 hours a day. This phase is marked by peak estrogen and a surge in energy. Shorter fasts maintain hormonal harmony and provide sustenance without causing undue stress on the body.
  • Second Power Phase (Days 16-19): During days 16 to 19, women can embrace fasting without specific time restrictions. This phase aligns with ovulation, with estrogen and testosterone at their highest. This combination can boost energy and motivation, making it a suitable period for various fasting durations.
  • Nurture Phase (From Day 19 Until Next Period): Finally, from day 19 until the start of the next period, it’s generally advisable to avoid fasting. This period coincides with the luteal phase when progesterone rises, and the body requires more nourishment and stability to support potential pregnancy.


Breaking the Fast Thoughtfully

While breaking a fast may seem straightforward, it’s a critical aspect often overlooked. To fully leverage the benefits of your fasting efforts, your choice of the first post-fast meal is pivotal and should align with your specific fasting objectives.

  • Gut Health Improvement: If your goal is to enhance your gut microbiome, prioritize foods rich in probiotics, prebiotics, or polyphenols. Probiotic-rich foods introduce beneficial bacteria, prebiotics nourish them. While Polyphenol foods help restore your gut’s mucosal lining, particularly important for addressing leaky gut symptoms. Options include fermented yogurt (including non-dairy alternatives like coconut yogurt), kombucha, and various seeds and seed oils.
  • Muscle Building: For those aiming to build muscle, break your fast with protein-rich foods. Meat eaters can opt for eggs, sausage, beef jerky, or chicken. Vegans may consider choices like broccoli, mushrooms, chickpeas, avocado, and plant-based protein shakes.
  • Fat Burning: Surprisingly, if your objective is fat burning, consider breaking your fast with fats. Good fats can stabilize blood sugar levels and typically don’t disrupt the fasting state. This allows your body to continue burning body fat. Consuming fat after fasting doesn’t technically break your fast; it extends it. Sources of good fats include avocados, bone broth, various nuts and nut butter, and olives.


In conclusion, “Fast Like a Girl” offers a transformative approach to fasting for women, aligning this powerful practice with the natural rhythms of their hormonal cycles. By embracing cycle fasting and understanding the four distinct phases of the female cycle, women can optimize their energy, metabolism, and overall well-being.

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