KarbZilla

Intermittent Fasting

16:8, OMAD, and how fasting pairs with keto.

Free tool · no signup

What should I eat today?

Turn the ingredients you like or already have into a keto breakfast, lunch & dinner, net carbs counted.

Build my keto day →

Guides

Fasting Guides

What Breaks a Fast? A Practical Guide

Coffee, gum, supplements, a splash of cream? Whether something breaks your fast depends on your goal. Here is a clear, practical framework.

Fasting Guides

Does Coffee Break a Fast? The Honest Answer

A clear answer to whether coffee breaks a fast, covering black coffee, cream, sweeteners, bulletproof coffee, and how your fasting goal changes the rule.

Fasting Guides

16/8 Intermittent Fasting: How It Works + What to Eat

A clear beginner's guide to 16/8 intermittent fasting: how the schedule works, how to pick your eating window, what to eat, what breaks a fast, and realistic results.

Fasting Guides

OMAD on Keto: The One Meal a Day Guide

OMAD means eating all of your food in one sitting and fasting the rest of the day. Here is how it works with keto, who does well on it, and how to try it safely.

Fasting Guides

How to Start Intermittent Fasting on Keto

A calm, step-by-step way to begin intermittent fasting on keto without burning out. Pick a schedule, ease into it, and mind your electrolytes.

Fasting Guides

Intermittent Fasting for Women on Keto

Female physiology can respond to fasting differently, and the evidence is thinner than the confident claims. Here is a measured, gentle approach for women on keto.

Fasting Guides

Autophagy and Fasting, Explained

Autophagy is a real cellular recycling process, and fasting appears to increase it, but the timing and human benefits are far less certain than the hype suggests.