Sigma Nutrition Radio

#487: Weight Cutting in Combat Sports – Jordan Sullivan

Jul 5, 2023
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INSIGHT

Two-Phase Weight Cutting

  • Weight cutting combines chronic fat loss and acute fluid/glycogen/gut losses to hit a lower class.
  • Athletes regain weight after weigh-in if there's a rehydration window, creating the competitive advantage logic.
ADVICE

Cut Carbs Before Sweating

  • Reduce carbohydrates in the days before weigh-in to remove glycogen and its associated 2–4 g water per g glycogen.
  • This can quickly reduce body mass without immediate sauna use and preserves later refeed potential.
ADVICE

Lower Fiber To Lose Gut Mass

  • Lower dietary fiber in the final days to reduce gut residue weight by ~1–3 kg.
  • Swap high-fiber brown grains for white varieties to lose gut mass while keeping carbs for performance.
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