Puzzles are fun and entertaining, but their benefits go beyond simple recreation. In fact, playing and solving puzzles on a regular basis can benefit adults and children in various ways. Puzzles often stimulate problem-solving centers in the brain and can improve brain health. Researchers have found that, by completing crossword puzzles, playing challenging games or doing other puzzle-related activities, individuals may be less likely to develop brain plaques that have been tied to Alzheimer's disease.