On a cognitive level, reading is probably the most challenging task. Flipping through pieces and articles in any form may get the brain bloated and may lead to intellectual nausea according to Nicholas Carr. Reading for sheer joy is an orgasmic experience. As you emotionally get carried into the reading experience the brain gets the feed and enjoys the constant challenge. All that one reads, sure does not register as a file it copulates with other similar thought patterns that already exists and gives the reader immense pleasure.