OMAD: One Meal a Day
The most aggressive mainstream fasting protocol — and for many people, the most effective. One large meal. 23 hours of freedom from food decisions.
OMAD is the most aggressive mainstream fasting protocol — and for many people, it's the most effective. You eat one large meal per day within a 1-hour window and fast for the remaining 23 hours.
Why OMAD Works
- It's nearly impossible to overeat in one meal. Even if you eat a 1,500 calorie meal — which is massive — you're still at a significant deficit for most people. Try eating 2,500 calories in a single sitting. It's very hard with real food.
- Zero decision fatigue. You don't think about food all day. You eat once, you're done. No meal prep. No snack decisions. No "what should I eat for lunch?" Your brain is free.
- Maximum fat burning window. With 23 hours of fasting, your body spends the majority of each day in a fat-burning state. Insulin stays low. Stored fat gets used.
- Simplicity. One grocery trip is smaller. One meal to prepare. One set of dishes. Less time cooking, less time eating, more time living.
The OMAD Day
Making OMAD Sustainable
Choose the right meal timing
Most OMAD practitioners eat dinner (5–7 PM). This aligns with social eating, family meals, and natural end-of-day hunger. Some prefer lunch — experiment and find what works for your schedule.
Make the meal count
Your single meal should be nutrient-dense: a large protein source (8-12 oz meat or fish), plenty of vegetables, healthy fats, and a moderate carb source. This isn't the time for pizza and ice cream — it's your body's only fuel for 24 hours.
Stay hydrated
Drink at least 80-100 oz of water throughout the day. Black coffee and plain tea are fine. Add a pinch of salt to your water if you feel lightheaded — electrolytes matter during extended fasts.
Don't start here
OMAD is an advanced protocol. Work up from 16:8 → 18:6 → 20:4 → OMAD over several weeks. Jumping straight to OMAD from 3 meals a day is a recipe for failure and binge eating.
Sample OMAD Meals
Your one meal needs to pack serious nutrition. Here are examples that hit 1,400-1,600 cal with 80g+ protein:
🥩 The Classic
- 12 oz ribeye steak (780 cal, 60g protein)
- Large baked potato with butter (300 cal)
- Big salad with olive oil (200 cal)
- Steamed broccoli (55 cal, 5g protein)
- Total: ~1,335 cal · 65g protein
🍗 The Builder
- 10 oz chicken thighs (450 cal, 50g protein)
- 2 cups rice (400 cal)
- 2 eggs scrambled (180 cal, 12g protein)
- Avocado (240 cal, 3g protein)
- Veggies (50 cal)
- Total: ~1,320 cal · 65g protein
⚠️ OMAD Is Not for Everyone
If you have a history of eating disorders, are pregnant or nursing, have diabetes, or are under 18, consult a healthcare professional before attempting OMAD or any extended fasting protocol. This is a tool — not a universal prescription.
Tools That Help
Large Dinner Plate Set
OMAD means one big, beautiful, satisfying plate of food. A proper 12-inch plate makes the meal feel substantial.
Shop on Amazon →Electrolyte Powder (Sugar-Free)
Essential for 23-hour fasts. Prevents headaches, fatigue, and lightheadedness. Zero calories — won't break your fast.
Shop on Amazon →Cast Iron Skillet
When you eat one meal a day, it better be incredible. A cast iron makes restaurant-quality steaks, chicken, and more at home.
Shop on Amazon →Eat Stop Eat by Brad Pilon
The original research-backed book on extended fasting for fat loss. Goes deep into the science behind OMAD-style protocols.
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