How do you keep active and healthy?

After reading Sea Stachura's report indicating that lifelong exercise may prevent precursor to Alzheimer's, I started wondering if this would motivate more people to be active. From the feature:

If you exercise you probably have your own reasons for doing it. Maybe you want to lose weight or work off stress. Researchers at the Mayo Clinic have found another reason for regular exercise. It reduces the likelihood you'll develop mild cognitive impairment. MCI is a precursor to Alzheimer's.

While I enjoy walking the dogs to get outside and keep them from bouncing off the walls of our home, this extra reason doesn't hurt. That said I'm not sure it would be the first, second or third thing in my mind while tying my shoes before hitting the trail. Would it motivate you?

Do the immediate benefits of physical activity motivate you more than long-term health returns? How do you think about lifelong exercise? How do you stay active and healthy? Join our open online discussion to share your tips on being active.