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.

From my first 24-hour fast to a 9-day water fast — here’s how fasting reshaped my mindset, health, and confidence over 25 years.

Discover my personal 16:8 intermittent fasting routine — from early-morning workouts to strategic meal timing — and learn practical tips for handling hunger, staying flexible, and making IF a sustainable lifestyle.

Breaking an extended fast the right way is just as important as the fast itself. Learn what to eat, what to avoid, and how to reintroduce food safely — with a simple, science-backed refeeding guide.

Extended fasting is tough — but it doesn’t have to be torture. These 20 tips will make your next multi-day fast easier, safer, and more effective.

After 7 days without food, I lost 11.6 lbs — but what came back during refeeding? In this post, I break down exactly what returned (fat, muscle, water) and what didn’t, using real body composition data and biomarker tracking. Backed by science and personal experience.

What happens when you go 7 days without food? Here’s what I experienced — from weight loss and fat burn to muscle loss, ketones, and more.