Aerobics has come a long way since Olivia Newton-John bleated, "Let's get physical!" in leg warmers and a terry headband, and Linda Rogers-Jojola has helped reshape this former fitness craze. Using a combination of step aerobics, resistance training, kickboxing and Pilates, Linda helps sculpt a healthy, functional and (hopefully) attractive body for each member of her class. (And no, you don't need to join the club to participate.) With a seemingly endless amount of energy, she motivates students without the artificial amplification or drill-sergeant mentality typical of many aerobics instructors. Linda knows bodies, and she spends a good part of every day sharing that knowledge: When she isn't teaching classes at Phoenix Suns Athletic Club or Estrella Mountain Ranch, she's sweating through her regular spot as fitness advisor on Fox 10 News.

Need more proof that aerobics is good for you? Just look at Linda. We thought she was our age, only to discover that her children are our age.