Fasting Protocol Ratio (fastingProtocolRatio)Daily Time Allocation (Fasting Hours : Eating Window Hours)
Defines the daily division of 24 hours between complete caloric rest (fasting) and healthy nutrient intake (eating). Proven circadian protocols range from 14:10 (gentle circadian balance) and 16:8 (the clinical standard for metabolic flexibility) to 18:6 (accelerated fat oxidation) and 20:4 / 23:1 (OMAD or One Meal A Day). Fasting periods beyond 16 hours prompt the liver to deplete glycogen stores and initiate cellular autophagy.
Default: 16:8 Protocol (16 Hours Fasting / 8 Hours Eating)
Metabolic Phase Thresholds (metabolicPhaseThresholds)Postprandial Biological Milestones (Elapsed Hours Since Last Meal)
Maps your body's cellular and hormonal transitions after your final bite: Phase 1 Fed State (0–4h: glucose and insulin rise, food is absorbed); Phase 2 Early Transition (4–12h: blood glucose normalizes, insulin drops, liver begins releasing stored energy); Phase 3 Fat Burning & Ketosis Induction (12–18h: liver glycogen drops by ~80%, mobilizing stored fatty acids); Phase 4 Ketosis & Cellular Autophagy (18–24h: liver produces ketones, cells recycle worn-out components via autophagy); Phase 5 Deep Autophagy & Growth Hormone Surge (24–48h+: human growth hormone peaks up to 500% to preserve lean muscle while cellular clean-up peaks).
Default: Phase 1: 0–4h | Phase 2: 4–12h | Phase 3: 12–18h | Phase 4: 18–24h | Phase 5: 24h+
Temporal Elapsed Precision (temporalElapsedPrecision)Continuous Background Clock Synchronization
Calculates precise elapsed fasting duration by anchoring directly to your device's persistent real-time clock. Unlike simple visual timers that freeze when your screen turns off or battery-saver mode activates, this continuous clock synchronization guarantees uninterrupted tracking across phone lock screens, laptop lid closes, and browser refreshes.
Default: Real-Time Device Clock Synchronization (Zero Drift)
Reverse Goal Meal Cutoff (reverseMealCutoff)Backward Schedule Calculator (Target Meal Time Minus Fasting Duration)
Solves backwards to tell you the exact time you must stop eating tonight so you can comfortably break your fast at a chosen family dinner, business lunch, or weekend social event tomorrow. Factoring in a recommended 30-minute digestive wind-down before bedtime ensures insulin levels drop naturally before you go to sleep.
Default: Target Social Meal Time Minus Fasting Duration
Circadian Melatonin Window (circadianMelatoninWindow)Nocturnal Fasting Buffer (Hours Between Last Bite and Sleep)
Calculates the protective buffer between your last meal of the day and your planned bedtime. Clinical sleep studies show that eating within 2 to 3 hours of sleep delays natural melatonin release, raises nighttime resting heart rate by 8–12 BPM, and suppresses deep restorative slow-wave sleep. Maintaining a 3 to 4-hour pre-bed fasting window significantly improves sleep architecture and next-day energy.
Default: 3.0 Hours Prior to Target Bedtime
Electrolyte & Osmotic Hydration Baseline (osmoticHydrationBaseline)Daily Fluid & Mineral Target (Milliliters / Ounces + Milligrams)
Quantifies daily fluid and essential mineral requirements during fasting. As insulin falls, the kidneys naturally release stored water and sodium (the natriuresis of fasting). Drinking 30 to 35 ml of fluid per kg of body weight (typically 2,500 to 3,500 ml or 85–120 fl oz) paired with essential electrolytes (sodium, potassium, and magnesium) prevents common fasting side effects such as lightheadedness, headaches, and afternoon fatigue.
Default: 3,000 ml (100 fl oz) Water + Essential Electrolytes
