A middle-aged, slightly overweight white woman is sleeping on a simple bed. Her chest is clearly visible rising and falling under the covers, and her breathing movements are clearly visible. Her nostrils should also be slightly dilated and contracted. The covers also clearly move up and down along with her breathing movements. The camera angle is fixed and does not move during the entire shot. The lighting is dim and unchanging. Her hands are not visible on the screen, and the focus is on the breathing movements of her chest.