Dabsteeeeeep

A person in a dark jacket and pants lies on their back on a white floor in a narrow hallway, repeatedly rolling or sliding backward along the floor, moving from the foreground toward the far end of the hallway, then reversing direction and rolling back toward the foreground, repeating this motion in a continuous loop. The hallway has light-colored walls, a red object at the far end, and framed items on the left wall.