A new study would have you believe that eating chocolate makes you smarter. At least temporarily as it has been show to increase grey matter for a couple of hours. The study also suggests that the cocoa flavanols found in chocolate could be useful in enhancing brain function for people fighting fatigue, sleep deprivation, and even the effects of ageing.
But you need chocolate with high cocoa content and the cocoa used in the study is not available commercially. However good organic dark chocolate of 75-85% cocoa might do the trick. Black&Green is one of my favorite dark chocolates, but there are others at your local health food store (which is pretty much Whole Foods these days since they buy everyone out).
Chocolate has also been known to help cardiovascular health for the same reason of improving vascular flow. So indulge and enjoy.
Read the research press release.