Adrenaline increases the "alertness" of the nervous system, meaning it's ready to trigger muscle contraction. It also increases the amount of blood flow and changes the tension of the muscles, which, ...

Add Yahoo as a preferred source to see more of our stories on Google. Though eyelid twitching (technically called myokymia) can feel disconcerting, the good news is that it’s typically fleeting and ...

Add Yahoo as a preferred source to see more of our stories on Google. Though many people experience muscle twitching, it's often incorrectly identified as a muscle spasm. While both are involuntary ...

Blepharospasm describes a condition where a person experiences an involuntary spasm of the muscles surrounding the eyelid. “Blepharo” refers to the eyelids, while “spasm” describes twitching of the ...

Doctors identify these movements as 'fasciculations', because they occur when individual nerve fibers, which control small muscle groups activate independently to produce brief muscle contractions.

This 5-step practice, including palming, rapid blinking, and focus shifting, re-lubricates eyes and relaxes optical nerves.

When a medicine's side effects turn out to be more marketable than its intended purpose, people tend to forget what the intended purposes were. The "little blue pill" never quite became synonymous ...