Once you leave school and get into the regular routines of life, it can be hard to find new things to do that make you think. It's often difficult to find something exciting to stimulate your brain. Many people use little games and puzzles to keep their brains challenged and active, which is admirable. While doing a crossword every day probably won't make you a genius, it can imbue little nuggets of knowledge into your mind that previously might have just stayed in the newspaper. Personally, I like to read to keep my brain good and not dumb. It helps to have a group of friends who subtly bully you if you come up short when asked the question, "what are you reading right now?" But sometimes, intellectual hobbies aren't what you need to scratch your brain. Often, a nice long list of random memes will do just the trick.