What's that funny feeling coming from your gut? It could be oozing stomach acid or a booming belch or stinky fart that is ready to burst. These revolting reactions happen during the digestion of food. Once you've mashed up and swallowed a meal, your body has to turn it into energy, water, and . . . well . . . 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. With close-up pictures and lots of disgusting facts, this book tells all about the gross science behind your body's functions.

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