2. Alcohol
Before you run off for a weekend bender in preparation for that algebra exam, the benefits of alcohol on the brain only occur when its consumed in moderation. Studies have shown drinking beer can help creativity, which is perhaps why people become so good at telling stories when theyre drunk. A recent report proved a direct relationship between childhood intelligence and adult alcohol consumption. It showed that the brightest students at school were often the heaviest drinkers when they grew up. So next time you see someone slumped in a gutter, covered in their own vomit, have a check to see if its the kid who always got As at your high school - chances are it will be.