great, that sounds like an awesome way to increase your neural networks...
i also thought about simply reading a lot of fiction, because it requires us to visualize the many different scenes.
how about analyzing words? single words that we don't know or words that we do know, but just never really paid much attention to? i found that while reading nabokov (i just happen to read his books right now)his vast vocabulary made so many relationships to things that understanding these alone can increase your networks.
i find that nevertheless there is no short-cut to increasing one's neural networks. as much as i'd like to believe that PR'ing increases them, they, in my mind, don't. but i think the alternative ways that we have mentioned so far are valuable tools already. so, cool, thanks! would love to hear more suggestions 
!!
