A while ago, I've written how hard it is to abstain from mental "junk" food. I meant things like news, blogs, Facebook, and so on. That was the beginning of my doctorate studies. Interestingly enough, that has passed too. I find myself happily devouring lengthy theoretical and philosophical ruminations.
But I can still "swallow" a novel or two while contributing my daily hour of energy expenditure on a stationary bike.
