As it turns out, you can teach an old dog new tricks. Not that we’re comparing anyone’s brain to a dog, because that would be, well, inappropriate. But if you want to give the ol' noggin a workout, Dr. Richard Restak has 28 tricks to help you improve your mental fitness, memory, concentration, creativity and analytical ability. In Mozart’s Brain and the Fighter Pilot, the neuropsychiatrist and clinical professor of neurology at George Washington University Medical Center asserts that you can increase interconnections between the brain’s functions and keep it growing through exercise, reading, logic problems, learning to play a musical instrument and more.