You're relaxing on the sofa when suddenly your eyelid starts twitching. Or perhaps it's a muscle in your arm, your leg, or ...

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.

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 ...

Every once in a while, your muscles go rogue on you. Whether it’s your eyelid twitching, an involuntary shudder, or a muscle elsewhere contracting at random, twitchy muscles happen to everyone. But ...

If you’ve ever wondered why some people seem to adapt more quickly to resistance training, it’s probably due to the type of skeletal muscle tissue they have. Each of our muscle fibers is either ...

Nothing has the ability to freak you out, take your breath away, or completely annoy you quite like a muscle cramp, spasm, or twitch. Honestly, just the thought of one is enough to make your eye, well ...