A kit provides an anchor for an exercise system. The kit includes a mount having spaced-apart first and second knuckles configured (i) to span interlaced knuckles of first and second leaves of a standard hinge assembly that mounts a door in a frame in an opening, the interlaced set of knuckles defining a passageway for receiving an original hinge pin, and (ii) to define a channel having a diameter sufficient to accommodate the diameter of the hinge pin. The kit also includes a replacement hinge pin, which, when inserted into the channel and the passageway, reaches the first and second knuckles of the mount defining the channel, and transforms the mount to the anchor.