Oozing stomach acid. Booming belches. Stinky farts. These revolting reactions happen during the digestion of food. Once you've chewed up and swallowed a meal, your body turns it into energy, water . . . and poop. Find out about all the nasty things that happen deep inside your belly--and learn why they sound, smell, and feel the way they do. Through close-up pictures, interactive augmented reality experiences, and lots of disgusting facts, you'll learn all about the gross science behind your body's functions.