Get Your Body to Start Doing What You Want

Do you know which foods make you "go" and which "stop you up?" E.R. physician Dr. Travis Stork challenges Melissa to a game of red light, green light, to test her knowledge of which foods stop the digestive tract and which ones get it moving.

Dr. Travis demonstrates what happens to the lungs when they are filled with smoke, and gives Andrew, a 19-year-old smoker, a hands-on example of what lung cancer looks and feels like.