Pls explain why the blood underneath my skin moves the way it

My legs constantly twitch/spasm. Does anyone know why this is

Why does my upper right side chest twitch ?

Why do my calves always randomnly twitch? I get cramps sometimes

Why do I always make this sound after I eat?

Any reason why my legs do this??

One month old always doing this sound. Why?

Why do my leg muscles twitch and move when I'm sat still?

Why do my leg muscles twitch and move when I'm sat still?

Why do my leg muscles twitch and move when I'm sat still?

Why do my leg muscles twitch and move when I'm sat still?

Why do my feet always crack any time i move them