One on One with Robby

Man says app helped him lose 500 pounds BLUE ISLAND, Ill -- In 2011, Rafael Zuniga weighed over 800 pounds. His weight was a lifelong battle that spiraled out of control. Over the past six years, he has lost 500 pounds. In theory, he did it by himself. But he'll tell you he wasn't alone. It was an app that got him on the path to living a...