Building Mental Muscle Author:Allen D. Bragdon, David Gamon, Ph.D. Conditioning exercises for the six intelligence zones by David Gamon and Allen D. Bragdon. The scientific evidence is now irrefutable: When you keep the problem-solving circuits of your brain active you improve performance and help prevent degeneration with age. This book provides clear explanations of how the brain operates, neuron-building e... more »xercises and tips on how to solve real-world challenges more effectively. "Help your memory last a lifetime by going to the gym today." 76 brain-building puzzles and exercises, 23 revealing self-tests. Foreign editions: China, Czech Republic, Indonesia, Korea, Mexico, Poland, Romania, Russia, Spain and Thailand; Simon & Schuster, UK. Over 140,000 copies sold in the USA alone, plus sales by Quality Paperback Book Clu« less