Achieving and maintaining a higher level of mental fitness can be surprisingly fun to your brain, it's healthy exercise. In 417 More Games, Puzzles & Trivia Challenges Specially Designed to Keep Your Brain Young by Nancy Linde you get 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.

Cross-train your brain by targeting 6 key cognitive functions: Long-term memory, working memory, executive functioning, attention to detail, multitasking, and processing speed. This is the kind of exercise you'll want to do, and all it takes is 10 to 15 minutes a day for a full workout.