Sarah Lorge Butler Author

Sarah Lorge Butler is the author of Run Your Butt Off! and is a Runner's World contributing editor. Her work has also appeared in The New York Times, Redbook, Women's Health and American Baby.

Michele Stanten, an ACE-certified fitness instructor, was the fitness director of Prevention for 20 years. She is the author of Walk Off Weight and has appeared in dozens of Prevention Fitness Systems DVDs.

Leslie Bonci, MPH, RD, CSSD, LDN, is the director of sports nutrition at the University of Pittsburgh Medical Center. She counsels clients ranging from individuals struggling to lose weight to scholarship athletes at Pitt who need to eat for better performance.