Here’s another incentive for you to walk your dog or walk to the gym rather than drive. Researchers from the Saarland University in Germany presented a new study explaining how high death rates from heart disease due to the changes in the lifestyles and diets of people can be reversed with moderate exercise. Simply 25 minutes of brisk walking can delay the aging process, improve cognitive functions and aid your brain in repairing damaged DNA. It can add seven years to your life. So take a hike! It could really do you some good.