Water Fasting on Keto: A Practical Guide to Extended Fasts
Water fasting — consuming only water, plain tea, coffee, and electrolytes for 24–72 hours — is an advanced practice with significant metabolic benefits when performed safely.
Who Is Water Fasting Appropriate For?
Experienced keto practitioners (6+ months fat-adapted), healthy adults with no underlying conditions, and people not taking medications that require food (especially diabetes, blood pressure, or blood-thinning medications).
Preparing for a Water Fast
Eat a complete, satisfying keto meal the day before. Prepare your electrolyte mix. Clear your social calendar. Choose a low-activity 2-3 days.
During the Fast
Drink 2.5–3.5 litres of water daily. Add 1/4 teaspoon pink salt per litre. Supplement magnesium glycinate. Rest more than usual. Light walking is fine; intense exercise is not.
Breaking the Fast
This is critical. Do not break with a large meal. Start with: a cup of bone broth. Wait 30 minutes. Then have a small, easily digestible keto meal: soft-boiled eggs, soft-cooked fish, or a small serving of well-cooked vegetables. Find perfect fast-breaking options in our keto beverage collection and gentle keto breakfast ideas.