Books are not very stimulating, are they?
I don't have ADHD, I'm just very sentive to boredom, like Pessoa (which is the only author I love and read once in a while and that , ironically, most people find boring).
If you're wondering what I truly like to do... well, I like browsing 4chan and listening to music. And that's all I do to keep boredom at bay. I used to smoke weed too, but I've stopped.
Some authors wrote some stuff that makes you feel alive too (I'm thinking of the atheists Nietzsche and De Sade) but most feel like eating unseasoned food.

Do you get what I mean?