A display device includes a display section with which a pair of body portions performing cooperative exercise can be visually recognized, an imaging section that can image a marker attached to one body portion of the pair of body portions, and a display control section configured to cause the display section to display an image representing a normal motion of the other body portion of the pair of body portions. The display control section estimates, on the basis of the position of the captured marker, a position concerning the other body portion visually recognized in the display section in the cooperative exercise and causes the display section to display the image in the estimated position.
