Every weekend after tennis, I'd come home and head straight for the sofa. Hours gone. That was life before intermittent fasting.

A few months in, something changed. Post-game — I walked the dog, did the chores, and still had energy left. I didn't understand it at the time. Now I do.

In this episode I break down the two reasons IF gave me back my energy: fat adaptation and mitochondrial efficiency. No jargon — just what actually happens in your body, and why it takes about three months to feel it.

This is Part 1 of 3. Two more unexpected benefits coming in the next two weeks.

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