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 ...

Maggie Rappaport, a personal trainer, works with several women during a senior cardio mix class at The Training Zone. The classes at the facility, 7020 E. Broadway, across the parking lot from the ...