NYTimes article: Exercise for your "Noggin"

"What goes on inside your brain when you exercise? That question has preoccupied a growing number of  scientists in recent years, as well as many of us who exercise. In the late 1990s, Dr. Fred Gage and his colleagues at the Laboratory of Genetics at the Salk Institute in San Diego elegantly proved that human and animal brains produce new brain cells (a process called neurogenesis) and that exercise increases neurogenesis." Read on...