Not that this is self-serving.....

Take a look at this article about the over-medication of young people for ADHD, and then contemplate an article from 2009 in Bicycling Magazine where it was noted that for one aspiring young competitive cyclist, "Riding is my Ritalin."  Now granted, ADHD can be very complex, but it does suggest that what is needed is not a renewed supply of ADHD drugs, but rather a vigorous game of "tag" or "basketball" during recess.

Or a nice ride.  But it's raining and snowing today, and I've got to be in my business clothes....sigh....