Is it normal for leg muscle to twitch like this all the time?

My lip keeps on shacking, its annoying. what is it??

Hand spasm - 2nd time. Should I be concerned?

Muscle or vein bulging out?

Lip muscle spasm?

Made a post yesterday about left arm pain - muscle spasms finally

Thumb Spasm

Muscle weakness, pain and twitching

Weird chest spasm!?

Are these normal muscle twitches? Are these even muscle twitches?

Are these muscle twitches?

Spasm or twitch in the muscle or nerve under the eye (video attached