One Meal A Day (OMAD)

Definition

A protocol of OMAD where the total daily calorie intake is consumed in one meal, fasting for the rest of the day (generally 23 hours of fasting).

How it works

The OMAD protocol is one of the most extreme forms of intermittent fasting, concentrating the entire daily calorie intake in a single eating window. This typically involves a 23-hour fast followed by a one-hour eating window. This approach creates an automatic calorie deficit as it is physically difficult to consume a large volume in a short time. The protocol is highly effective for weight loss but demands excellent discipline, good digestive tolerance, and balanced eating to avoid nutritional deficiencies.

Role

Creates an automatic significant calorie deficit and stimulates fat burning through long periods of fasting, while simplifying meal management.

Examples

• Take a single meal at 19:00 every day
• Consume a dense meal with protein, lipids, and complex carbohydrates at noon
• Fast from morning to late afternoon and eat a balanced meal only once

Recommendations

Ensure that all nutritional needs are met in a single meal by prioritizing nutrient-dense foods. Gradually incorporate this protocol after mastering shorter fasting periods. Regularly monitor nutritional parameters and consult a healthcare professional if you have medical history.

Key takeaway

OMAD maximizes calorie restriction and meal simplification but demands excellent nutritional planning and great discipline.

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