Brain Rules: 12 Principles for Surviving and Thriving at Work, Home, and School is a book written by John Medina, a developmental molecular biologist.[1] The book has tried to explain how the brain works in twelve perspectives: exercise, survival, wiring, attention, short-term memory, long-term memory, sleep, stress, multisensory perception, vision, gender and exploration.[2] Each chapter demonstrates things scientists already know about the brain, and things we as people do that can affect how our brain will develop.