Walking is now considered a form of exercise but was originally a form of transportation built into our daily life. Modern technology with all it's benefits have made us more sedentary creating many serious health issues.
Walking briskly, jogging or running has been proven very beneficial for your brain because it increases blood circulation and the oxygen and glucose that reach your brain. Keeping ones brain healthy is so simple all you have to do is what comes natural to the human body, walk.
So get out there each day and walk briskly, jog or run. You'll feel so much better when you've finished and your brain will love you for it!!
Keep It Simple, Consistent and Fun.