This book expands on the emerging field of neuroplasticity, the ways the brain can grow, heal, and change. It describes the role of neuroplasticity in diseases and conditions where brain functioning is a factor, such as Parkinson's, MS, dementia, and more, and how patients have been able to retrain their brains and learned to walk, speak, and hear. This book describes techniques and principles that can be used to improve the brain's performance for anyone.