You run or walk because you want to feel good, look good, or, just to be 'good.' This is called Eating Right and Exercising Right.
You have your very own program. Here are a few simple rules to follow.
Fruits and vegetables
Beans and legumes
Nuts and seeds
Fish, skinless poultry, and plant-based alternatives
Fat-free and low-fat dairy products
Healthier fats and non-tropical oils
Sodium and salt
Sweets and added sugars, including sugar-sweetened beverages
Red meats - if you choose to eat red meats, select lean cuts
Trans fat and partially hydrogenated oils
Run or walk three times each week for 30 minutes each time