The present invention is a self-adjusting link for connecting two anchors that move under a varying external force, comprising: N magnetic units N−1 link connectors, each link connector connecting one unit to an adjacent unit, each magnetic unit being held by the link connectors such that each pair of adjacent units can move from a closed position where they are magnetically bound to an open position where they do not exert significant force on each other and anchor connectors attached to the anchors. The length of the link increases as the external force increases sufficiently to cause one or more pairs of magnetic units to move from the closed position into one of the open positions to permit the anchors to further separate, and the length of the link decreases as the external force is reduced and one or more pairs of magnetic units move into the closed position.
