Get Your Body to Start Doing What You Want

NASCAR star Michael Waltrip takes Dr. Sears for the ride of his life. See what goes on inside Dr. Sears' brain as he zooms around the track at 200 mph!

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.

The Doctors bring you top tips for halting hiccups, preventing wrinkles, scheduling your period and more! Meet a chain-smoking teen. Can a new laser treatment help him quit? Plus, the best foods for digestive health.