Working a puzzle is a fun way to spend a day, but it is also a great way to improve your brain's function. Building a jigsaw puzzle engages both sides of the brain. You can build a jigsaw puzzle to celebrate this holiday, or you can do some other puzzle such as a brain teaser, word puzzle, or sudoku. All of these things have been proven to improve memory, logical thinking, and problem solving skills. So celebrating this holiday is just as useful as it is fun!