In this episode of the Biohack Your Business podcast, Karen explores one of the most debated biohacks out there - intermittent fasting - and breaks down why it can be a powerful tool if you understand how to do it right, especially as a woman in business.

Forget the trends and extremes, it’s about personal optimisation. Karen shares the biology behind fasting, the real difference between male and female fasting responses, and how she personally uses fasting to boost her energy, mental clarity, and business performance.

Whether you’ve tried fasting before or are curious to see if it could work for you, this episode gives you the insights, tools, and caveats you need to test it in a way that feels empowering not punishing.

In this episode, you’ll learn:

• What fasting actually does inside your body (beyond just skipping breakfast)
• The role of insulin, norepinephrine, BDNF, and autophagy in performance and longevity
• Why fasting can be a strategic reset not a restrictive rule
• How entrepreneurs can use fasting to unlock more time, energy, and clarity
• The difference between male and female fasting physiology (and why most advice out there doesn’t apply to women)
• How to start fasting gently, with cycle-aware practices and real-life flexibility
• What Karen’s personal fasting rhythm looks like and why she’s not fasting every day

Key Quote:It’s about making more space for clarity, energy, and business growth by working with your biology, not against it.”

If you’d like to try fasting in a safe, simple way designed for women, DM Karen the word FLOW on Instagram

The Female Fasting Protocol

Resources Mentioned:

• Karen’s Female Fasting Protocol One-Pager
• The Biohack Your Business Mastermind (https://biohack-your-business.com/join)
• Follow Karen on Instagram @‌thekarenkissane (https://www.instagram.com/thekarenkissane)
• DM FLOW to receive your copy of the guide