why do muscles do this? what is the science behind this madness?

It's obviously dancing.

>>9146236
Fasciculation. Random nerve short-circuits and fires all by itself.

Random fasciculations from time to time are meaningless -- persistent ones in the same place probably need to get checked out, can be early signs of several neurological issues.

>>9146318
As far as I remember, they basically don't happen with active usage of the muscle. The nerves can't misfire if they're constantly set and reset.

>>9146236
They said -- ...- MV

It's an early sign of ALS

>>9146496
Yes, but it is also an early sign of other things, and random sporadic cases are an early sign of nothing.

As said above, if it is persistent and recurs in the same place, get checked out.

>>9146318
Now that I think about it, one or two years ago it happened that a finger on my left hand was having episodes where the shit on the OP happened non stop for 2 minutes or so and then stopped.

>>9146236
Idk, I'd love to know though. Shit pisses me off.

>>9146236
Low potassium or other electrolytes (but mostly potassium) can cause misfiring of nerve and muscle impulses. This is the most common root cause of most muscle twitching. Its mostly seen in the eyelids but can effect any muscle group in the body. Same thing that causes muscle cramping.

>eat more bananas or drink some gatorade

Youre welcome. *mic drop*
/thread