Smelling Chocolate Boosts Reps, Cuts Hunger — SkimNews
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- 23 moderately trained men in their early to mid-20s completed more leg extension reps when exposed to chocolate aromas, with no increase in perceived effort, compared to a water control condition.
- Dark chocolate aroma (90% cocoa) led to an average of 18 additional repetitions and reduced hunger, increasing fullness and decreasing desire to eat before exercise.
- Milk chocolate aroma (60% cocoa) resulted in about nine more repetitions than the control and was rated as more pleasant than dark chocolate or water, though it did not affect appetite.
- Dr. Mohamed Nashrudin bin Naharudin proposed that chocolate scents act as learned cues—dark chocolate triggering anticipatory fullness, while milk chocolate enhances performance through hedonic reward.
- The study was limited to fasted male participants and did not measure hormonal or neural activity, leaving biological mechanisms speculative despite observed behavioral effects.
Why it matters: Athletes and fitness programs could leverage simple sensory cues like chocolate scent to boost training volume without added fatigue, suggesting non-nutritional strategies for performance—though applicability remains uncertain beyond young, fasted men. The 18-rep gain with dark chocolate exceeds typical ergogenic aids' marginal improvements.
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