even if you prepped since you were 5 years old? and what if you're unprepared, will the decrease be significant? I mean of course, even with weight lifting, you can't prepare even a year in advance and show a significant difference over professional competitors. But people do peak. Are you saying Einstien's IQ would be the same if he was tested at 50 yo, and he was working in the coal mines in virginia his since 5 yo? If so, that's indeed enlightening, I'd love to see any research that backs up that claim.