The evidence is all around us throughout the developed world. The rise of obesity and type 2 diabetes in our populations, – once a problem of middle age is now epidemic among children. These are preventable diseases that stem from inactivity and poor nutrition. Science is now able to determine that inactivity is physically shriveling our brains. Our culture treats the mind and body as if they are separate entities. What neuroscientists have discovered in the past five years is a riveting picture of the biological relationship between the body, the brain and the mind.