Actually there are a few things that have a measurable upward effect. One of the better documented ones is running an hour a day. Not only does it show measur

Actually there are a few things that have a measurable upward effect. One of the better documented ones is running an hour a day. Not only does it show measurable improvements on intelligence tests (for both rats and humans!), but it increases the rate of neurogenesis. Slightly less certain, but still very compelling is the research related to taking up a musical instrument as a child. I'm confident that it's just a matter of time before we have more targeted training regimens and smart drugs that are both powerful and safe.