Older adults who take a brisk stroll just three times a week could boost their brainpower and reduce the risk of memory-robbing illnesses such as Alzheimer's disease.

Are you one of the many seniors out there who knows you should be exercising, but you aren’t sure where to begin? Do the tools of fitness -- exercise bikes, nautilus machines, treadmills, exercise balls and free weights -- intimidate you? Or maybe you find exercise boring? If any of the above apply to you, you are not alone. Although many older people are well aware of the importance of physical fitness, 85% of seniors do not exercise on a regular basis. Many older people don't exercise for the same reason that people of all ages resist physical activity – they think of it as too hard, too boring or they are disappointed by the lack of immediate results.

"After walking on a treadmill at the local community center, I knew I'd be happier outside. So, I got a step counter and started walking in my neighborhood. Since then, I've seen yellow tulips bloom in spring and red dogwood leaves drop in fall. I always come home with more energy and happy to go on with the rest of the day." Marian (age 77)