ABERDEEN, S.D. (AP) - Every morning, Jessie Overaker hops out of bed and, like so many others, gets in her workout.

Her exercise of choice is jumping rope. Thats been the case for the past 15 years.

Shes 92.

Her kid sister, Evelyn Cooper, does aerobics twice a day most days, with the same aim of keeping fit.

Shes 90.

Overaker starts at 7 every morning, so she isnt in anyone elses way at the Primrose Retirement Community where she lives.

Its just like getting dressed. I fix my breakfast and clean the kitchen and then I jump rope. Then I do stretching exercises. Its part of my routine. I jump every day, Overaker told the Aberdeen American News (http://bit.ly/1EL8hgf ).

She said she has been skipping rope for the majority of her life.

My mother used to jump rope with us, Overaker said.

I just keep going until I jump 100 times, she said.

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Aberdeen sisters in 90s jump rope, do aerobics to keep fit