Water Fasting Guides
Science-backed articles on 72-hour water fasting, ordered by where you are in your fast - from preparing, through the hard hours, to breaking it safely.
Before you start
Deciding, preparing, and knowing the risks
How to Do a 72-Hour Water Fast: Complete Beginner's Guide
Step-by-step guide to your first 3-day fast. Preparation, what to expect each day, electrolytes, and how to break your fast safely.
10 min read
Is Water Fasting Safe? Risks, Who Should Avoid & How to Fast Safely
Understand the risks of extended fasting, who should not fast, and how to minimize dangers during a 72-hour water fast.
7 min read
Clean Fast vs Dirty Fast: Which Approach Is Right for You?
Understand the difference between clean and dirty fasting, what breaks a fast, and which approach maximizes autophagy.
10 min read
How Often Should You Do a 72-Hour Fast?
Finding your optimal fasting rhythm. Monthly, quarterly, or seasonal? Learn what works best for your goals and lifestyle.
6 min read
During the fast
Hour by hour, and what is safe to take
72-Hour Fast Timeline: What Happens Hour by Hour
A detailed breakdown of what's happening in your body during each phase of a 3-day fast, from fed state to peak autophagy.
9 min read
Supplements During a Water Fast: What's Safe and What Breaks ItNew
Which supplements you can take during a 72-hour fast and which ones end it. Electrolyte doses, why BCAAs stop autophagy, and what to do about your vitamins.
10 min read
Which Magnesium to Take While Fasting: Forms ComparedNew
Chloride, malate, lactate, bisglycinate, citrate, oxide - which form suits a clean fast, which carries hidden amino acids, and which is a laxative.
9 min read
Why Everything Smells Stronger When You FastNew
The sharper nose around day two is real. The hunger hormone ghrelin, ketosis and old survival wiring explain it - and why it fades once you eat again.
6 min read
Glucose Ketone Index (GKI) Explained: What Your Meter Numbers MeanNew
Glucose Ketone Index in plain language: the formula, the zones, therapeutic ketosis, why glucose bounces back up mid-fast - with real readings from a 72-hour fast.
9 min read
Breaking it, and after
Refeeding safely and reading your results
How to Break a 72-Hour Fast: Complete Refeeding Guide
What to eat after a 3-day fast, foods to avoid, and a 48-hour refeeding protocol to maximize benefits and avoid digestive issues.
8 min read
3-Day Fast Weight Loss: What to Expect (And What's Actually Fat)
How much weight will you lose on a 72-hour fast? We break down water weight vs. fat loss and what the research actually shows.
5 min read
Will I Lose Muscle During a 72-Hour Fast? The Science
The truth about muscle preservation during extended fasting. How growth hormone, ketones, and autophagy protect your gains.
7 min read
The science
What the research actually shows
Autophagy & Fasting: When It Starts, Peaks & How to Maximize It
Learn when autophagy starts during fasting (24-48 hours), how it peaks during a 72-hour water fast, and the science-backed benefits of cellular cleanup.
8 min read
72-Hour Fast Benefits: What Happens to Your Body
Complete guide to the benefits of a 3-day water fast, from weight loss and insulin sensitivity to immune reset and mental clarity.
6 min read
MCT Oil & C8 for Mental Clarity: Do You Need a 3-Day Fast?
Can MCT oil give you the same mental clarity as a 72-hour fast? Learn how C8 caprylic acid fuels your brain with ketones vs. a full water fast.
9 min read
Ready to Start Fasting?
Track your 72-hour water fast with our app. See autophagy phases in real-time and know exactly what's happening in your body.
Download App