The phrenic nerve controls the diaphragm, the dome-shaped muscle that is primarily responsible for breathing. Contraction of the diaphragm expands the lungs and draws air into them. The phrenic nerve ...

While hiccups are typically short-lived, they can also be painful, loud and disruptive—especially if they last hours (or more!). But what causes hiccups, and how can you get rid of them? Here, doctors ...

Many of us have felt a muscle in some part of our body suddenly and involuntarily tighten, causing a twitch or even severe cramp. Muscle spasms are common and typically don't signal a severe health ...