Thanks to the flavanols found in cocoa, chocolate improves performance on math exams, according to a team of researchers from the University of Northumbria in Great Britain.
The study was conducted with approximately 30 participants who were asked to count backwards from a number between 800 and 999.
According to researchers, this phenomenon could be attributed to a better blood flow to the brain through the flavanols, which improves concentration and appears to reduce the impression of mental fatigue.
There is however one drawback to the research findings, and that is that math skills improve provided that you consume the equivalent of 5 chocolate bars each day.