At one point or another, we’ve all experienced the unexpected, intense pain of a muscle cramp. Muscle cramps, also known as muscle spasms or charley horses, are the involuntary contraction of muscle ...

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 ...

Muscle spasms are sudden, involuntary contractions of one or more muscles. These spasms can be intensely painful and can last from a few seconds to several minutes. They often occur in the legs, but ...