Sounds like
Sleep Apnea
Alot of people who have sleep apnea complain of feeling like they are awake but unable to move or breath for a period of time and state "it feels like I will die if i can't move" or that "it feels like I am trapped in my own body and if i dont move I will die."
Major signs and symptoms of sleep apnea
Loud and chronic snoring
Choking, snorting, or gasping during sleep
Long pauses in breathing
Daytime sleepiness, regaurdless of how much sleep you get
Other common signs/symptoms of sleep apnea
Waking up with a dry mouth or sore throat
Morning headaches
Restless or fitful sleep
Insomnia or nighttime awakenings
Going to the bathroom frequently during the night
Waking up feeling out of breath
Forgetfulness and difficulty concentrating
Moodiness, irritability, or depression