Flavanols are natural chemical compounds found in cocoa seeds, which are used to make chocolate.

Flavanols are natural chemical compounds found in cocoa seeds, which are used to make chocolate.

Sample: 18 men.

Participants randomly swallowed a capsule containing either 500 milligrams of cocoa flavanols or 50 milligrams of cocoa flavanols (placebo). They then performed an exhausting 50-minute cycling workout while continuously and repeatedly taking the Stroop test (color names printed in a color different from the word’s meaning).

Shown: a significant improvement in cognitive function was observed after the high-dose flavanols capsule - faster reaction times on the most complex test tasks, as well as enhanced ability to filter out distracting information and increased concentration. No subjective differences were found between the groups - subjective fatigue was identical. Blood analysis also revealed no differences between the groups.

Like if you want the study repeated, but with subjects chugging a liter of vodka instead of flavanols.

Link to an article.