My mom probably would have still been exercising if she had lived past 67... She died of an autoimmune liver disease that wasn't diagnosed until she was about 60. She was very physically active as a girl and teen; was the leader of the girls athletic association in high school. Of course women were not supposed to be active in the 1940's and 50's, but I remember my mom riding bikes with me, doing sit ups and push ups with a record (an old fashioned thing for you youngsters), and swimming. She took up fitness walking in her 50's and was still going strong until she got sick. I used to walk with her when we would go visit and she could keep up with me very well.
I definitely got my athletic ability from her, although I got my poor balance and spatial relations from my dad, who did nothing athletic except play squash. I wish my mom had lived to see me start cycling and to see my son race when he was in high school.