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Intermittent Fasting (IF) Schedule & Window Calculator

Calculate your daily fasting and eating windows for 16:8, 18:6, 20:4 (Warrior Diet), and 23:1 (OMAD) protocols with cellular autophagy timeline.

โณ Fasting Protocol
Daily Eating Window
12:00 PM โ€“ 8:00 PM
16 Hours Fasting / 8 Hours Eating
Fasting Starts (Post Last Meal)
8:00 PM
Ketosis & Fat Burn Activation
8:00 AM (Hour 12)
Autophagy Cellular Cleanse
10:00 AM (Hour 14)
Fast Breaks (Next Day)
12:00 PM

The Biological Stages of Intermittent Fasting

Hours of Fast Metabolic Stage Cellular Effect
0 โ€“ 4 Hours Anabolic / Fed State Insulin rises, glucose used for energy
4 โ€“ 12 Hours Post-Absorptive State Blood glucose normalizes, glycogen breakdown begins
12 โ€“ 16 Hours Fat Burning & Ketosis Liver glycogen depletes, adipose fat converted to ketones
16 โ€“ 24 Hours Autophagy Cleanse Cellular recycling of damaged organelles and proteins
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Important Medical & Clinical Disclaimer Not Medical Advice

The calculations, biometric estimates, nutritional facts, and clinical screening scores provided by Health Hub are intended solely for general educational and personal wellness tracking purposes. They do not constitute professional medical advice, clinical diagnosis, or personalized treatment plans.

Never start, stop, or adjust any prescription medication, diet, or workout regimen based solely on calculator values. Individual human physiology, genetics, lab values, and medical history vary significantly. Always consult a licensed medical doctor, board-certified physician, or qualified healthcare professional before making any medical decisions.

๐Ÿšจ In case of a medical emergency, immediately call your local emergency services or visit the nearest hospital. Read Full Medical Disclaimer โ†’