Only 12.2% of American adults are metabolically healthy. That means roughly 88% are walking into a fast with a metabolism that hasn't been trained to make the fuel switch. Here's what that means - and how to fix it.

Fasting, exercise, and diet each do something the others can't. Here's what makes extended fasting unique — and why all three work better together

Fasting benefits are often oversold or dismissed too quickly. This evidence-based guide explains what research actually says about intermittent fasting and extended fasting, including metabolic benefits, brain effects, autophagy, inflammation, and which claims remain speculative.

Fasting is powerful, but it’s not harmless. This article covers the most important risks and downsides of extended fasting, backed by physiology, data, and real experience, to help you avoid common mistakes.

Extended fasting temporarily lowers testosterone, but research and real data show it rebounds during refeeding. Here’s how my levels changed across two multi-day water fasts and why fasting may actually support healthier long-term hormone balance.

Extended fasting can dramatically improve blood sugar regulation and insulin sensitivity. Here’s my real Dexcom CGM data and fasting results.

How fast do ketones rise during fasting? In my 7-, 9-, and 10-day water fasts, I tracked how quickly I entered ketosis and what made the biggest difference. Turns out, movement early in the fast helps you reach deep ketosis faster — and burn more fat along the way. Here’s how glucose drops, ketones rise, and why fasting ketosis is totally different from dangerous ketoacidosis.

Fasting activates autophagy — your body’s cellular recycling system. Learn how different fasting lengths boost repair, longevity, and overall health.