MY body doesn't twitch when YOU sleep.
^ that's an idiot right there -_-
it would be because your having a dream and nightmares would be related with screaming (dogs would do similar too)
When a person jumps in their sleep, these movements are called myoclonic twitches, and it's theorized that these are caused by a body that relaxes too quickly or a brain that is aware of becoming unconscious.
restless leg syndrome, or can be the side effect of taking pain meds
That is the Twilight Sagas.
No
The brain controls all body movements, twitches, glitches, snaps, and everything. You're welcome.
when you have an orgasm and a stream flushes out of your vagina, you may get a full body orgasm or twitches.
youtube
The duration of Twitches - film - is 1.43 hours.
If by 'spasms' you mean foot, eye, face, etc. twitches, the cat is almost certainly dreaming. Dogs and cats evidently have vivid dreams but what we see are body twitches and movements.
Twitches is about magic and magic belongs to fantasy literature.
Twitches - film - was created on 2005-10-14.
Twitches Too was created on 2007-10-12.