When your body gets used to burning fat for fuel, it becomes better at using fat by turning up the systems that break it down and use it for energy.
Evidence from Studies
Supporting (4)
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Low carbohydrate, high fat diet impairs exercise economy and negates the performance benefit from intensified training in elite race walkers
The study found that a low-carb, high-fat diet made athletes burn more fat during exercise, which supports the idea that the body can adapt to use fat better as fuel.
Fat adaptation followed by carbohydrate loading compromises high-intensity sprint performance.
The study shows that eating a high-fat diet for a week helps the body burn more fat for fuel, which supports the idea that fat adaptation improves the body's ability to use fat as energy.
People on a high-fat diet burned more fat during exercise and used less sugar, which means their bodies got better at using fat for fuel.
Effects of fat adaptation and carbohydrate restoration on prolonged endurance exercise.
The study found that eating a high-fat diet for 6 days made athletes burn more fat during long exercise, which supports the idea that the body can get better at using fat for fuel.
Contradicting (0)
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Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.