You awaken in the middle of the night to find your roommate standing in the corner of your room with an aggressive look on his face, punching a pillow, and running in place. Despite this strange behavior, you realize that your roommate is still asleep, and when you wake him he shares with you, in vivid detail, the bizarre dream he was having about being involved in a fight while running on a treadmill. Given what you have learned about sleep disorders, it is most likely that your roommate:___________
