Professor Arthur Kramer of the University of Illinois in Urbana is part of a revolution, CBS News contributing correspondent Dr. Sanjay Gupta reports. He’s challenging a long-held belief in the world of neuroscience that the brain is hardwired, fixed, immutable.

A new study by researchers has found that even light or moderately intense physical activity, such as walking or cycling, can substantially reduce your risk of early death.
The study combined the results from the largest studies around the world on the health impact of light and moderately intense physical activity.
Although more [...]