My mother was born in the 1940s. When I was a child (1970s), my mother regularly did ... swimming, tennis, jogging, cycling, softball, horse-riding, aerobics, yoga, walks. + random other fitness or sport.
My dad's mom didn't do sport, my other grandmother (short person!, born 1900s) used to coach basketball as an adult, and rode horses as a youngster. I'm not aware she did any other sport, though.
Did your mum do any fitness or sport?