sentence: A woman demonstrates how to do sit ups, in a gym room, using a woman who is simulating the exercise as an example. sentence:   A woman kneels on the hardwood floors of a gym room and talks to the camera. sentence:   The camera pans out and another woman is revealed lying on her back on a gym mat as the woman kneeling above her continues to talk. sentence:   The woman lying down demonstrates how to do a  sit up and the other woman continues to talk at times touching the other woman's stomach.