Time is the ingredient.
The Metabolist
The science of the fasted state: metabolic health, longevity and performance. Written and reviewed by the Kētos team.
Do Electrolytes Break a Fast?
All articles
9 min
Do Electrolytes Break a Fast?
Plain, unsweetened electrolytes do not break a fast. Sodium, potassium, and magnesium are calorie-free minerals that leave insulin and mTOR untouched, so they sit...
Hydration & Electrolytes
5 min
Walk After You Eat: The Timing Trick for Steadier Blood Sugar
A ten-minute walk after dinner can do more for your blood sugar than a longer walk earlier in the day, according to recent science....
Metabolic Health
9 min
Does Coffee Break a Fast?
Black coffee does not break a fast. A plain cup has about two calories, so it does not raise insulin in any meaningful way....
Fasting Fundamentals
10 min
What Breaks a Fast? The Complete Guide
Ask ten people whether something breaks a fast and you will often get ten different answers. The confusion is understandable, because the question is...
Fasting Fundamentals
6 min
Ketogenic Intermittent Fasting: How Keto and Fasting Work Together
Search for the ketogenic diet and intermittent fasting turns up beside it almost every time. The two get recommended together, folded into the same...
Metabolic Health
6 min
Electrolytes and Intermittent Fasting: A Complete Guide
Why fasting depletes electrolytes, the three that matter most, and whether electrolytes break a fast. A clear, science-backed guide for anyone fasting.
Hydration & Electrolytes
4 min
The Best Supplements for One Meal a Day (OMAD) Fasting
OMAD, one meal a day, compresses all your eating into a single window and leaves you fasting for the other 23 hours. That long...
Fasting Fundamentals
5 min
A Comprehensive Guide to Foods and Beverages During Fasting: What to Consume and What to Avoid
The hardest part of a fast usually isn't the food you skip. It's the long list of gray-area drinks and add-ins you're not sure...
Cellular Health & Longevity
Fasting Fundamentals
3 articles
Reference
The fasting lexicon
65 plain-English definitions of the terms behind fasting, from autophagy to electrolytes.
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