When I try to go to sleep at night, as I am falling asleep my body twitches. I don't mean shivers. I mean that an arm, leg, hand, or even my head will all of a sudden twitch. Sometimes it will be a hard jerk. Have any of you guys experienced this? I am a couple of weeks into detox. Most of the chills have gone away, but the jerks are bad. My leg has even drawn up for a couple of seconds. Is this normal in the detox process?