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Water Fasting Guides
Original, science-based articles to help you understand what happens during a water fast—beyond a single scale number. Pair these guides with our free calculator for personalized fat vs. water estimates.
Glycogen, Water Weight, and Why the Scale Drops Fast in 72 Hours
Most early "weight loss" on a fast is water released as glycogen stores empty—not body fat. Here is the physiology behind the first 72 hours.
7 min read · Read guide →
How to Safely Break a Water Fast (Refeeding Basics)
Ending a fast safely matters as much as the fast itself. Learn phased refeeding, what to eat first, and when to seek medical help.
8 min read · Read guide →
What Happens to Your Body During a 72-Hour Water Fast
From falling insulin to rising ketones—here is a realistic timeline of physiological changes during the first 72 hours of water-only fasting.
9 min read · Read guide →
Who Should Avoid Extended Water Fasting
Extended water fasting is not for everyone. Learn contraindications, medication interactions, and when professional supervision is essential.
7 min read · Read guide →
These guides are for educational purposes only—not medical advice. Consult a healthcare provider before extended fasting.