Going on a low-carb, high-fat diet doesn't make runners slower, even though their muscles store less sugar for energy.

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Low carbohydrate high fat ketogenic diets on the exercise crossover point and glucose homeostasis

Narrative Review

2023

This study shows that athletes on low-carb high-fat diets can still perform high-intensity exercise like 800m intervals just fine, even though they have less stored carbs (glycogen) in their muscles. The researchers found these athletes burned fat at very high rates during intense exercise, challenging the old idea that you always need carbs to perform well.

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Source Study

Low carbohydrate high fat ketogenic diets on the exercise crossover point and glucose homeostasis

Score: 1

DOI: 10.3389/fphys.2023.1150265

Similar Assertions

When people switch to a low-carb, high-fat diet, their bodies can burn fat for energy during harder workouts that would normally require carbs, whereas on a normal diet this switch happens at easier exercise intensities.

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