Celebrity Fitness

No one would say Blake Lively ever looked anything short of amazing, but after getting into supervillain-worthy shape for her role in The Green Lantern, her body is insane! Her secret? Celebrity trainer Bobby Strom's circuit workouts. "This was new for her—Blake had never done a regimented routine with a trainer before," says Strom. "Believe it or not her body began to change in only three weeks!"

—Lisa Tilson

More Fitness! Movie Star Workouts