If you eat sugar before a 60-minute walk or light jog, your body burns less fat during the workout—but if you eat protein instead, it doesn’t hurt fat burning at all.

53

Pro

0

Against

Evidence from Studies

Supporting (1)

53

Community contributions welcome

53

Metabolic impact of feeding prior to a 60-min bout of moderate-intensity exercise in females in a fasted state

Randomized Controlled Trial

Human

2022

This study found that eating sugar before a workout made women burn less fat, but eating protein didn’t change fat burning at all—exactly what the claim says.

Contradicting (0)

0

Community contributions welcome

No contradicting evidence found

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.

Source Study

Metabolic impact of feeding prior to a 60-min bout of moderate-intensity exercise in females in a fasted state

Score: 53

DOI: 10.3389/fspor.2022.1070477

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