
Monday Update 12/22-Why Cutting Carbs Can Quietly Kill Your Performance
From Double Edge Fitness by Derek and Jacob Wellock
December 22, 2025 · 16 min
About this episode
The episode discusses the impact of high-carb versus ketogenic diets on athletic performance, particularly in elite race walkers, and offers actionable insights for high-intensity training.
Ready to train harder, recover faster, and actually feel better doing it? We take a clear-eyed look at new research on elite race walkers comparing high-carb and ketogenic diets under caffeine, then translate the findings into simple, actionable steps for your own high-intensity training. The early bump from caffeine shows up in both groups, but by week two the high-carb athletes surge ahead with stronger VO2 max, quicker paces, and lower heart rates. That’s not just a lab win—it’s a blueprin...
Topics covered
- nutrition
- exercise
- performance
- diet
- research
Keywords
- high-carb diet
- ketogenic diet
- caffeine
- VO2 max
- heart rates
- training
- recovery
- performance
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