Clinically diagnosed and prescribed hyperactive kid right here. I have no proof and no strong theory as to why ADD/ADHD folks might be attracted to cycling, but I know it works for me. I also know that I get bored out of my head waiting for the train or bus and riding in a car makes me want to claw my eyes out.

So is it therapeutic? Hell if I know. I do know that it clicks for me and it's like fingernails on a chalkboard whenever I have to go somewhere other than by bicycle.