The top 10 celebrity workouts and celebrity diets for May 2010 focus on Jake Gyllenhaal, Robert Downey Jr., Gwyneth Paltrow, Scarlett Johansson, Erin Andrews, Nicole Scherzinger, Chris O’Donnell, Blake Lively, Ellen Pompeo, and more!
NCIS star Chris O’Donnell uses a diverse workout regimen, including weight training, interval training, and outdoor sports to keep himself physically fit.
