05/23/2026
Fasting gets a bad reputation when it comes to muscle. Most people assume going without food means your body starts breaking itself down. But that’s not what the research shows.
When you fast, growth hormone surges 2 to 5 times above baseline specifically to protect your lean muscle mass. One study found a 14x increase in women. (Frontiers in Endocrinology, PMC11842881) Your body is working to preserve you, not break you down.
But strategy is critical. Because fasting done wrong can work against you, especially hormonally.
Women are more sensitive to caloric restriction than men. Extended fasting at the wrong time in your cycle can suppress ovulation and disrupt cycle regularity. This is not a reason to avoid fasting, but it’s a reason to be smart about it.
Best window for women: early follicular phase, days one through ten. Avoid the week before your period, during fertility challenges, or under high chronic stress.
The non-negotiables for everyone:
Electrolytes. Sodium, potassium, magnesium. Most people feel terrible not because fasting is hard but because their minerals are depleted.
Light movement only. Walking is ideal. You’re in repair mode.
Break your fast with foods like bone broth, eggs, fish, cooked vegetables. Small protein first.
Sleep. Growth hormone peaks when fasting and sleep combine. Protect that window.
Done strategically, fasting supports metabolic reset, cellular repair, and hormonal balance. When insulin drops and inflammation settles, your s*x hormones finally have the environment they need to do their jobs.
But if your hormones are still struggling after all of that...the root usually runs deeper than any single protocol can fix. I put together a free masterclass walking you through exactly how to balance your hormones naturally. Cortisol, estrogen, progesterone, testosterone...all of it.
Comment ‘HORMONE’ below and I’ll send it to you right now.