you twitch due to a chemical reaction in your body due to stress or nervousness, which sends a signal to your brain, which causes your nervous system to send pulses of electricity through your body, causing physical movement or jestures that are uncontrollable.
It is an uncontrollable body movement. Such as a twitch in a hand or arm.
Well... if hes got a twitch in his arm that makes a some sort of swinging a knife notion.. u might be in some trouble
A lot of crystal meth will make you twitch
It is the brain.
Some say that Meth will make you twitch in your sleep. Weed can too.
because you are messed up! nobody elses arm does that!
Dehydration, most commonly
Superstitions about a left arm twitch vary across cultures, but some believe it could mean impending bad luck or a forthcoming event. It is often seen as a sign of something negative or a warning to be cautious.
Sometimes people are hungry when they twitch. Other times, they might ve trying to fall asleep. Some people have disorders that make them twitch too
Presence of myoglobin makes the difference between the two.
I don't know professionally but if your talking about house league or school league there is the twitch where you twitch your arm for longer catches and the one I like to call the alligator.
a xylophone