It can happen anywhere, anytime. Maybe you've taken a fall, been in an accident, or had a sports injury and didn't feel quite right afterward. That persistent headache, blurry vision, trouble concentrating and sensitivity to light are all warning signs of a traumatic brain injury (TBI).

When football season begins, emergency room visits for sports injuries increase. That's because about 3.5 million kids and adolescents younger than 14 are injured playing sports every year.

Use it or lose it. How many times have we heard that? Now we're learning that exercising and nourishing the brain are essential for keeping your mind fit and flexible. What's more, we now know that maintaining an agile mind doesn't have to be difficult or painful. In fact, it can be loads of fun.