Understand the modern mismatch that's making you unwell! This book is about the gap between the body you inherited and the life you're actually living.

Your body was shaped by ten thousand generations of hunter-gatherers, tuned to sunlight, movement, real food, and a tribe that had your back. Then, in the space of about ten generations, civilization rebuilt nearly everything around you — and left your biology running the same old instructions in a world that no longer sends the same signals. The result isn't personal failure. It's mismatch. And mismatch can be fixed.

The only way to fix your health is to understand why it broke in the first place.

• Find out why your body still runs on a 200,000-year-old clock, and why that clock still matters
• Learn why sitting, not smoking, may be the most underrated threat to modern life
• Understand why "eat less, move more" misses almost everything that actually drives weight and metabolic disease
• Discover how the food industry engineered your appetite against you
• Find out why hunger isn't an emergency, and why fasting isn't starvation
• Understand why modern medicine is brilliant at rescue and surprisingly bad at prevention
• Learn how to rebuild the sunlight, movement, food, sleep, and tribe your biology still expects — without giving up modern life

Should I listen to this book?

Yes — if you have a body and want to understand why it feels the way it does.

Health & longevity — This book can be mined for insight into sleep, metabolism, chronic disease, inflammation, exercise, and why so much popular health advice doesn't actually work

Everyday energy & mood — Learn why you're tired, hungry, foggy, or anxious in the safest and most comfortable era in human history, and what to do about each one

Life & relationships — Understand the real cost of loneliness and disconnection, why community isn't optional for the nervous system, and how to rebuild the tribe modern life dismantled