The brain is susceptible to all we expose it to—people, music, work—even the physical environments we traverse on a day to day basis. Everything we partake in has the potential to subtly shift the wiring of our brain. The question is: how do we wire our brains for the better? That’s where brain puzzles and teasers come in. We can enhance our mental fitness by exposing the brain to puzzles that challenge our normal modes of thinking.