If you do a lot of sitting and get little physical exercise, you are naturally at risk for cardiovascular disease, especially if you are over 55. New research shows that within six month of participating in a commonsense, aerobic exercise program you will experience improved cognitive functions - meaning better brain health. These include increased attention span, the ability to stay focused, better decision-making, improved working memory, better planning, and the ability to think with more agility - switching back and forth between tasks you're doing. You have even better returns if you follow a diet of vegetables, fruit, low-fat diary foods, less salt, and moderate amounts of whole grains, fish, poultry, and nuts. Do you fear losing your mental capacity as you age? Here's your mission: Get moving, and remember, what's good for heart is good for your brain. (Consult with your medical provider before beginning an exercise program.)