Drink Water!

A 2011 study in the British Journal of Nutrition found that even mild dehydration in men reduced vigilance and memory and increased tension, anxiety, and fatigue.

Put Down The FRIES!

A 2009 Cambridge University study found that high-fat diets made laboratory rats not just slower but dumber.

Sugar = Bad...M'Kay?

A recent UCLA study found that a diet high in fructose slows the brain, hampering memory and learning. Omega-3 fatty acids--found in salmon, walnuts, and flax-seed--can counteract the disruption.