sentence: A young man is standing in an open doorway with his hands over his head palms facing towards him on a bar secured at the top of the doorway. sentence:   The young man lifts himself up and places his feet in the gap between the bar and the top of the door frame. sentence:   The young man lowers his body, extending himself the full length of the doorway, hands behind his head, elbows out. sentence:   The young man does two sit ups. sentence:   The camera shows the top of the doorway focusing on the bar and the young man's feet secured at the top of the doorway. sentence:   The camera returns to the full view of the young man doing sit ups in the doorway. sentence:   The young man does three more sit ups.