Abstract: The sit-up foot anchor includes a door bumper that includes a planar section that extends over to a pair of footholds. The pair of footholds is parallel with one another, and are hemi-cylindrical cavities adapted to receive a foot of an end user therein. The planar section is adapted to be positioned underneath a door, and the door bumper is adapted to be positioned on a first side of said door whereas the pair of footholds is adapted to be positioned on a second side of said door. In use, the device utilizes said door in order to securely hold feet of said end user while said end user conducts a sit-up.