90 Puzzles, Logic Riddles & Brain Teasers to Exercise Your Mind From New York Times bestselling author Dr. Gary Small - an expert on neuroscience, memory, Alzheimer's Disease, dementia, anxiety and human behavior - Brain Games to Exercise Your Mind: Protect Your Brain from Memory Loss and Other Age-Related Disorders will keep your mind sharp and in-shape. Memory loss and age-related dementia illnesses are among the most frightening diagnoses in the US, affecting nearly six million adult Americans. Dr Small provides over 90 puzzles, logic Riddles and brain teasers to exercise your mind, and have fun while staying sharp.