Abstract: A portable exercise device for use in a doorway or other opening in the home, includes a base with a pair of arms pivotally connected thereto for rotation between a vertical storage position and a horizontal position in which they engage the sides of the opening; adjustable brackets on the outer ends of the arms for centering and securing the base in the opening; a central, multi-section post for mounting in a sleeve on the base and for connection to a top bracket for securing the top of the post to the top of the opening; a pair of multi-section columns for mounting in sockets on the base and connection to the top bracket; a pair of spring assemblies connected to the base and slidable on the columns; pulleys mounted on the top ends of the columns and near the bottom end of the post; and a cable extending around the pulleys to a seat which is slidably mounted on a bar, one end of which is removably mounted in a socket on the base, the bar extending outwardly from the post.