> The downside to this body type is that the brain is always very active; it always has lots of calories to draw from. Makes for great programmers and problem solvers, but also leads to poor attention span and insomnia.

Interesting - that part about overactive brain, short attention span and insomnia matches ADHD very nicely.

In my case, since I began using stimulants to treat ADHD, my sugar cravings disappeared and weight stabilised. In the past I used to overeat, because it calmed me down.