Keep your mind fit with brain aerobics! If you like great mental exercises, try brain aerobics. All you have to do is open this book, lift a pencil, and flex your mind while solving this assortment of invigorating puzzles. In Brain Aerobics Word Search Puzzles , you'll need to look for words in grids that form distinctive picture outlines directly related to the puzzles' themes. You get a grid in the shape of an umbrella, for example, in a puzzle about rain. Each word search is fun and challenging as well as a little different.