Water Fasting
A form of fasting in which only water is consumed — no calories from any source. Water fasting is the strictest form of extended fasting and is typically practised for 24 to 72 hours.
Water fasting removes all calorie intake and forces the body to rely entirely on stored energy. This increases fat use but also requires careful management. Hydration and electrolyte balance become more important as duration increases. It is an advanced approach and should be used with caution.
Related Topics
Related glossary terms
Autophagy
A natural cellular process where the body breaks down and recycles damaged or dysfunctional components. During fasting, autophagy increases…
Behavior Proof
Concrete evidence created by completing actions — such as finished fasts, logged meals, or daily step counts — that demonstrates the new pat…
Economy Mode
A state where the body conserves energy due to perceived scarcity of food, slowing metabolism and weight loss. It can occur after prolonged…
Fasting Arc
The predictable progression of physical and mental states during a fast.
Fasting Window
The period where no calories are consumed.
Fat Oxidation
Fat oxidation is the process of breaking down fat to produce energy.
Fat-adapted State
A state where the body relies more on fat than carbohydrates for energy.
Fat-Burning Switch
The point where fat becomes the primary fuel source after glycogen depletion.