If you’ve ever jolted awake with a painful cramp in your calf, you know that nighttime leg cramps (a.k.a. Charley horses) can disrupt your sleep and cause serious discomfort. Health experts say that ...

In a serendipitous discovery, UC San Diego researchers using cryo-EM technology captured the first visualizations of the 3-D structure of the muscle acetylcholine receptor in fetal and adult muscles.

Though many people experience muscle twitching, it's often incorrectly identified as a muscle spasm. While both are involuntary contractions of a muscle, muscle spasms and muscle twitching aren't ...

In a new research report, a team of scientists led by Johns Hopkins Medicine say people with severe obesity and a common type ...