Why do our bodies make that 'hic' sound?Uncover the tiny spasm your body can't control.

From the show

Science Around You

Learn the science behind one of the body's strangest reflexes. A hiccup is a muscular and neurological misfire—a glitch in the normally smooth process of breathing. This reflex involves a sudden contraction of your diaphragm and the nerves that control it, resulting in that familiar sound.