Smelling Dark Chocolate Boosts Workout Performance, Study Finds

A new study suggests that simply inhaling the aroma of dark chocolate before and during exercise can significantly improve physical performance without increasing perceived effort. Researchers from the University of Malaya found that participants who smelled dark chocolate with 90% cacao completed 18 more repetitions during a leg extension exercise compared to those who smelled water Source: lavanguardia. Milk chocolate aroma yielded about nine additional reps Source: infobae. The findings were published in Frontiers in Physiology.

Study design and results

The double-blind trial involved 23 healthy men aged 20–25 with moderate training experience, all in a fasted state Source: infobae. Before and between sets, participants inhaled one of three scents: dark chocolate liquid (90% cacao), milk chocolate (60% cacao), or water (control). The dark chocolate group not only performed more reps but also reported reduced hunger and increased satiety after exercise Source: lavanguardia. In contrast, milk chocolate made the experience more pleasant but had little effect on appetite Source: lavanguardia.

Potential mechanism and limitations

Lead author Mohamed Nashrudin bin Naharudin suggested that the effect may be a learned association: the brain interprets the bitter, rich aroma of dark chocolate as a signal of fullness, effectively tricking the body into an anticipatory state of satiety Source: lavanguardia. However, the study only included young men, so results may not generalize to women or older populations. The authors also noted that similar effects might occur with other aromas strongly associated with satiety, but further research is needed Source: lavanguardia, infobae.