Crossword puzzles aren't just for entertainment. These types of puzzles engage your brain and help an individual expand their mind. By simply filling out a crossword puzzle your brain will get a cognitive work out. Solving clues for the puzzle will improve your vocabulary, enhance your vocabulary and increase your problem solving skills. A Sunday Relaxing Crossword Puzzle book would benefit anyone's brain. They can vary in difficulty so pick one that is not too frustrating to start.