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The Brutal Science of Fighter Weight Cuts
5 Sep
Summary
- Fighters drastically cut carbs, fiber, sodium, and fluids before weigh-ins.
- Fats are the main energy source during restrictive pre-fight diets.
- Rehydration involves a rapid, strategic increase in carbs and sodium.
Modern MMA weight cutting has evolved from guesswork into a precise science. Fighters drastically reduce carbohydrate, fiber, sodium, and fluid intake, often averaging just 1,750 calories and 55 grams of carbohydrates daily. Fats become the primary energy source, with fluid and sodium intake plummeting to facilitate water loss.
Following the weigh-in, a rapid rehydration and refueling process begins. Carbohydrate and fluid consumption increases approximately sixfold, and sodium levels surge to over 5,000 mg to aid rehydration. Fats are reduced to ensure faster digestion.
While fighters have become adept at recovery, restoring glycogen levels optimally by fight time remains a challenge. Some fighters fade quickly, highlighting the ongoing quest for nutritional strategies to enhance performance mere hours after extreme weight cuts.
