Add Yahoo as a preferred source to see more of our stories on Google. 102-year-old Peggy Roberts attended senior exercise classes for more than a decade. She'd get on a bus and arrive to class on time ...

When Linda Mullenhour enters the pool, she takes control. All eight members of her class mimic her every move, listening to her verbal commands. “One, two, three, four,” she says, “and we’re going ...