The bestselling, breakthrough book on reversing the aging process, updated for its 15th anniversary to include important information about how the Younger Next Year rules affect the brain as well as the body. Yes, you can be functionally younger year after year, by following Harry and Chris's rules for exercise, eating, and connection. Congratulations, you are about to get younger!Dr. Henry Lodge provides the science. Chris Crowley provides the motivation. And through their New York Times bestselling program, you’ll discover how to put off 70 percent of the normal problems of aging—weakness, sore joints, bad balance—and eliminate 50 percent of serious illness and injury. Plus, prominent neurologist Allan Hamilton now explains how following “Harry’s Rules” for diet, exercise, and staying emotionally connected directly affects your brain—all the way down to the cellular level. The message is simple: Learn to train for the next third of your life, and you’ll have a ball. This new edition includes two brand-new chapters on brain health, memory, and cognition, including one by esteemed neurologist Allan J. Hamilton, explaining the cognitive benefits of exercise and fitness as we age, and one from Chris with a more personal view of the topic.