I wrote a blog post for LivRite Fitness recently on working out as you age. Of course, I totally think you should read it but here is the bottom line. Your fitness level determines the type of exercise appropriate for you, not your age. Working out affects your health and functioning as you age in a very positive way! It is so important to keep exercise in your life or start it at any age, even later on in life.
In fact, a 2014 review article on aging and exercise published in the Journal of the American Academy of Orthopedic Surgeons concluded that:
Decades of research support the fact that much age-related deterioration is the result of the effects of sedentary lifestyles and the development of medical conditions rather than of aging itself.
Great news! This means that when it comes to the aging process, there is something we can do to help stay active and healthy for the rest of our lives. Just another reason that exercise should be part of everyone's lifestyle!