Why do people twitch in their sleep?
Dreams? Or sometimes, your body will naturally jolt you to pickup your bloodflow throughout your body, sometimes you will even wake up from it, feels like I'm falling when it happens to me.
Increases in anxiety can cause certain individuals to twitch while asleep. The other causes for sleep twitches are startling noises, vivid dreams, and muscle fatigue.
Dreams, when something exciting or scary happens they get are suprised, happens to me all the time.