While growing up, my Dad gave me a sign to put over my desk that said THINK.  Yesterday, the National Geographic sent an ad for THINK, which is to draw attention to our brains.  Health, happiness, longevity, memory are needed for a Brain Health Workout and National Geographic has put together a book on BRAIN HEALTH which is comprehensive and a complete guide for $39.95.  You can write them at ll45 17th Street NW, Washington, D.C. 20036-4688.  Our brains are working for us 24/7 and the more we know, the healthier we can perhaps be as we fear what could happen if we start to lose memory or cognition.