A lively mix of challenges?? riddles?? brainteasers to stimulate neuron growth!</br>Based on scientific research - concentrated cognitive efforts increase functioning</br>An illustrated game book specifically created to cross-train the brain</br>Recommended by a brain neuroscientist for brain strength?? flexibility?? long-term health</br></br>Product Description</br></br><DIV>Based on the science that shows that people middle-aged or older who solve word games and brainteasers have a significant cognitive advantage over those who do not?? <I>399 Games?? Puzzles & Trivia Challenges</I> is the illustrate