OMAD & 20:4 Intermittent Fasting Protocol (165 lb Female)
Compressed 4-hour feeding window protocol for a 74.8 kg (165 lb) woman: 1,520 kcal, 115g protein pacing, and electrolyte defense.
A 165 lb female (29% body fat, 117.2 lb LBM) practicing OMAD (One Meal A Day, 20:4) should target 1356 kcal with 115g protein within a 4-hour evening window. Supplement 3,200mg sodium during daytime fasting to prevent orthostatic dizziness while achieving an expected 0.9 lb/week fat loss rate.
OMAD & 20:4 Intermittent Fasting Protocol (165 lb Female)
Shared automatically across all 7 clinical calculators
Compare all 3 peer-reviewed equations in real time:
6,000–7,500 steps/day or 1–2 resistance sessions/week
Visual Intermittent Fasting Clock & Loss Curve
Interactive 24-hour chronobiological dial mapping insulin nadir, fat oxidation, and autophagy milestones while safeguarding skeletal muscle mass.
24-Hour Circadian Fasting Clock
Drink at least 2.5–3.0 Liters of water with 1,000–1,500mg sodium during the fasting hours. Low insulin drives rapid renal natriuresis (salt dumping); without electrolytes, fasters experience headaches, orthostatic fatigue, and false hunger cravings.
The 4 Circadian Stages of Intermittent Fasting
What physiological mechanisms occur inside your cells as fasting duration advances across 24 hours:
Digestion & Postprandial Storage
Nutrient absorption, insulin secretion, muscle glycogen & triglyceride synthesis.
Postabsorptive Glycogen Transition
Blood glucose normalizes; hepatic glycogenolysis sustains 75% of cerebral glucose requirement.
Accelerated Lipolysis & Ketosis Onset
Hepatic glycogen stores depleted; adipose triacylglycerol hydrolysis accelerates.
Autophagy & Cellular Recycling
mTORC1 suppressed; lysosomal autophagosome degradation of damaged organelles and senescent proteins.
Projected Weight & Body Fat Loss Curve
Incorporates adaptive metabolic thermogenesis (-10 kcal/kg lost) and protocol-specific lean mass partitioning.
Download Your Intermittent Fasting Blueprint Card (PNG)
Generates a high-contrast 1080×1350 visual card for Instagram Stories or 1-click sharing on r/Fitness, r/loseit, r/xxfitness & r/MacroFactor.
12-Week Fasting Timeline & Weight Loss Check-In
Visualizes fat mass reduction while monitoring lean tissue retention across 16:8 or OMAD schedules.
Daily Morning Weight Log (100% Private in Your Browser)
No account or email required. Saved automatically to your device via LocalStorage so you can check in daily.
1-Click Export to MyFitnessPal, Cronometer & MacroFactor
Open Cronometer (More → Targets → Macronutrient Settings → Fixed Values) or MyFitnessPal (More → Goals → Calorie, Carbs, Protein and Fat Goals) and copy-paste the exact numbers below:
Eating Window Target (Paced across 2–3 feedings)
Fasting Day Target (Lipolytic deficit balance)
7-Day Static Average (For single-goal tracking apps)
Clinical Nutrient Standards to Hit Your Calculated Targets
Micro-Filtered Grass-Fed Whey Isolate Standard
28g Protein • 3.3g L-Leucine • <0.2g Lactose • 110 kcal
Delivers 41% of your 135g daily protein target in two low-volume servings while crossing the 3.0g leucine mTORC1 trigger.
Free-Form Essential Amino Acids (EAA) + Soluble Prebiotic Fiber
3.5g L-Leucine • 8g Partially Hydrolyzed Guar Gum • Zero Gastric Heaviness
Engineered for patients experiencing early satiety on Semaglutide or Tirzepatide who need maximal myofibrillar preservation without meal volume.
Micronized Creatine Monohydrate (5g) + Quantitative Electrolytes
5g Pure Monohydrate • 1,000mg Sodium • 200mg Potassium • 60mg Magnesium
Supports intracellular water retention, ATP resynthesis during resistance training, and electrolyte balance during fasting or sauna protocols.
Biometric Macronutrient & Bioenergetics Reference Table
Structured clinical breakdown optimized for algorithmic analysis and generative AI engine extraction.
| Timeline Stage | Time Window | Metabolic State | Nutritional Action |
|---|---|---|---|
| Deep Fasting | 8:00 PM - 4:00 PM | Peak Autophagy & Ketone Synthesis | Water, Sea Salt, Black Coffee, Hibiscus Tea |
| Pre-Dinner Break | 4:00 PM | Enzymatic Activation | 35g Protein shake + small portion of raw almonds |
| Main OMAD Feast | 6:30 PM - 7:30 PM | Full Nutrient Replenishment | 80g Protein + roasted vegetables, sweet potato, olive oil |
| Fasting Window Begins | 8:00 PM | Basal Insulin Stabilization | Chamomile tea + 400mg Magnesium glycinate |
Clinical Analysis: OMAD & 20:4 Intermittent Fasting Protocol (165 lb Female)
OMAD (20-hour fast, 4-hour feeding window) provides intense autophagic signaling and insulin reduction. For a 165 lb woman, consuming 115g protein within a 4-hour evening window requires splitting intake into a lighter starter feeding and a dense main course to prevent GI distress and ensure absorption.
Key Execution Takeaways for This Profile
- Maintain a 20-hour fast (8:00 PM to 4:00 PM next day) with abundant mineral hydration.
- Split your 1,520 kcal intake into two feedings within the 4-hour eating window.
- Supplement 3,200mg sodium and 400mg magnesium daily to prevent muscle cramps and headaches.
Verified NCBI PubMed Clinical Citations
Peer-reviewed scientific evidence and clinical trials underpinning this nutritional profile:
- PMID: 27737674 — Moro T, et al. Effects of eight weeks of time-restricted feeding (16/8) on basal metabolism, maximal strength, body composition, inflammation, and cardiovascular risk factors in resistance-trained males. J Transl Med. 2016.View on PubMed
- PMID: 26374764 — Tinsley GM, La Bounty PM. Effects of intermittent fasting on body composition and clinical health markers in humans. Nutr Rev. 2015.View on PubMed
Profile-Specific Questions & Answers
Can the human body absorb 80g of protein in one meal?
Yes. Digestion simply slows down to release amino acids over 6 to 8 hours. Schoenfeld & Aragon (2018) confirmed that whole-body protein retention is fully efficient with larger boluses.
Is OMAD sustainable long-term for women?
We recommend cycling OMAD 3–4 days per week with 16:8 fasting on remaining days to avoid chronic sympathetic nervous system activation and menstrual irregularity.