Muscle twitches fall into two main types. There’s myoclonus, where a whole muscle or group of muscles twitch or spasm. Then ...

Add Yahoo as a preferred source to see more of our stories on Google. Chest pain can be disconcerting, but it’s important to remember that not all discomfort signals a serious health condition like a ...

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 ...

Tweaked by a muscle twitch? From an uncontrollable fluttering eyelid to a pulsing calf muscle, these small, rapid involuntary muscle contractions may happen at any time -- and can be annoying.

After a grueling CrossFit workout on a hot Summer morning that involved kettlebell swings, goblet squats, and about 100 walking lunges, my lower body was toast. But what was weird was that my left ...

Chest pain can be triggered by many different conditions and situations, and not all chest pain is equal. Here's what you ...

In cold temperatures, blood vessels constrict, which can increase blood pressure and strain the heart. This can lead to chest ...