Lifechangers: Fun, No-Work Workout

"Extra" Lifechanger Jeanette Jenkins is the Hollywood trainer, turning America on to exercise by turning back the clock!

"Think back to when you were a child and would just run outside and play," said Jenkins. "Everything from tennis, to ping-pong to basketball to dancing, hula-hooping. All these things burn calories and get you moving!"

Just ask singer/dancer Kelly Rowland, who gets into shape with Jenkins by jumping rope. Rowland said, "She brings the fun and the energy back into the workout."

Watch all the fun!

Rowland, getting ready to go on tour with Chris Brown, just released her new album, "Here I Am," now available on iTunes. Fans can also purchase it on her website, a href="" target="_blank">