From Nancy Linde's bestselling puzzle series, this book features 440 all-new exercises to challenge—and improve—your brain’s long-term memory, working memory, processing speed, executive function, attention to detail, multitasking skills.  Achieving and maintaining a higher level of mental fitness every day can be surprisingly fun—and to your brain, it’s healthy exercise. In this next exciting entry in her bestselling games series (including 399 Games, Puzzle & Trivia Challenges Designed to Keep Your Brain Young with 547,000 in print), Nancy Linde offers a brand-new collection of puzzles, trivia challenges, brainteasers, and word games that are not only great fun to do but are specifically designed to give your brain the kind of workout that stimulates neurogenesis, the process that allows the brain to grow new cells. With each daily puzzle, cross-train your brain by targeting one of 6 key cognitive functions: Long-term memory, working memory, executive functioning, attention to detail, multitasking, and processing speed. And 75 Brain Boosters—a brand-new feature in this book—will build on the original puzzle and take your brain in a new direction.