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 Stopwatch Puzzles , you'll need to think fast to answer a variety of fiendishly challenging timed quizzes that will test your trivia knowledge, anagram skills, ability to follow directions, and more. Ready, set, go
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