Movement changes your brain -- not just your body. Modern technology allows us to see what happens in our brains in response to doing certain things. It's astonishing. Below you can see a "before and after" set of scans from someone just after taking a walk. This
comes from English neuroscientist Tara Swart. NOTE: The increased green, yellow, orange, and red coloring in the brain scan on the right indicates increased blood flow, which is a very good thing:
