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Health Web: Research Finds Smelling Chocolate May Boost Strength Training, With the Brain Playing a Key Role

From Liberty Times · () Chinese

Translated from Chinese and summarized by DistantNews. Read the original for the full story.

At a glance

In-depth Named sources Context piece
  • In a study of 23 young men with at least two years of weight-training experience, smelling 90% dark chocolate before leg extensions led to 18 more total repetitions than an odorless control.
  • The participants also reported less hunger and greater satiety, while perceived fatigue did not rise significantly.
  • Physician Wang Szu-heng said the findings highlight the brain’s role in exercise performance, but noted that expectations may have influenced the results.

A smell, rather than a snack, may have helped experienced lifters push through more repetitions. In a 2026 study, 23 young men with at least two years of weight-training experience trained after fasting for about 10 hours and smelling either 90% dark chocolate, milk chocolate or an odorless substance.

During leg-extension exercises using 80% of their 10-repetition maximum, participants who smelled dark chocolate completed 18 more total repetitions than those in the odorless control group. The milk-chocolate group completed nine more repetitions. Their perceived fatigue did not increase significantly despite the additional training volume.

The participants also said they felt less hungry, more satisfied and less interested in eating after smelling the dark chocolate, although they did not consume any. Physician Wang Szu-heng discussed the study on his “One-Minute Fitness Class” Facebook page.

The point of this study is not for everyone to rush out and buy a bar of chocolate to take to the gym.

· Wang Szu-hengThe physician said the research primarily highlights the brain’s role in exercise performance.

Wang said the finding should not be taken as a reason to buy chocolate for every gym session. Its broader message, he said, is that exercise performance depends on more than muscle strength. Hunger, pain, fatigue, mood, motivation and a person’s judgment about whether they can continue may all influence performance.

He also cautioned that the study had limitations. Participants could easily guess that the odorless substance was the control, so some of the difference may have resulted from expectations about receiving the effective intervention. Sometimes, Wang said, the body has not reached its limit, but the brain has already applied the brakes.

The factors limiting exercise performance are not only in the muscles.

· Wang Szu-hengHe described hunger, fatigue and a person’s sense of whether they can continue as additional influences.
About this summary

Originally published by Liberty Times in Chinese. Translated, summarized, and contextualized automatically by DistantNews, with a note on how the source frames the story. Not individually reviewed before publishing. How this works.

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