We've all experienced it: you're in an important meeting or sitting in a quiet classroom taking a test when suddenly, an embarrassing noise breaks the silence. It's your gut, and it's gurgling. This can be a result of gas or peristalsis, the contraction of your intestines. A certain amount of this is normal and unavoidable — digestion requires action in your gut, and a silent gut isn't a healthy one.  Even so, you probably want to avoid a cacophony of gurgles and groans at inappropriate times, and there are steps you can take to cut down on these embarrassing noises.