The Flex Fasting Framework: The Science, The Shift, and Exactly How I Do It Now

Thursday I told you I stopped fasting for almost a year.

I told you about the fires, the stress, the season where my nervous system was so overwhelmed that my body simply refused to cooperate with a fasting window and how instead of fighting it, I listened. I told you that what came out of that year wasn’t a failure. It was something I’m now calling flex fasting.

What I didn’t tell you is what happens next. What coming back to fasting actually looked like. How I rebuilt it, slowly, carefully, on completely different terms than before. And the research that showed up right in the middle of that process and made me feel like science had finally caught up to what my body had already figured out on its own.

That’s what today is.

This is the framework behind the flexibility, the specific principles, the study that changed my thinking, and exactly how I apply this day to day and week to week. The part I couldn’t put in Thursday’s piece.

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Coming back slowly and what that taught me about rigidity

When I started fasting again after that year away, I didn’t go back to 16 hours. I didn’t go back to any number, actually. I just stopped eating after dinner and noticed when I was hungry in the morning.

What I found was that my body settled naturally into about 12 to 13 hours. Not through discipline. Not through white-knuckling a window. It just happened, because that’s what felt comfortable, and I was paying attention to comfort instead of compliance for the first time in years.