A method of using a shoe system having a progressively resilient shoe insert, comprising: providing a shoe-insert having an upper leg and a lower leg connected by a front end, providing the upper leg with an upwardly-facing concave front segment and an upwardly-facing convex rear segment terminating at the front end, providing the lower leg with a downwardly-facing concave front segment and a downwardly-facing convex rear segment, the lower leg forming a mirror-image of the upper leg, and the method further comprising; the upwardly-facing convex rear segment terminating at a straight outer rear leg segment and the downwardly-facing convex rear segment terminating at a straight outer rear leg segment, putting a first load on the straight outer rear leg segment of the upper leg, and the the first load bending the upper leg and the lower leg and creating a contact area between the upwardly-facing concave front segment and the downwardly-facing concave front segment, the contact area having a center point being at a first distance from the front end, pulling an upper forward segment away from a lower forward segment immediately adjacent to the front end and creating a first loop opening, the first loop opening being defined by the upper forward segment, the lower forward segment, the contact area and the front end connected to the upper forward segment and the lower forward segment, progressively increasing the first load to a second load and moving the contact area to a second distance from the front end, the second distance being greater than the first distance, the upper forward segment and the lower forward segment expanding the first loop opening to a second loop opening, the second loop opening being defined by the upper forward segment the lower forward segment, the contact area and the front end connected to the upper forward segment and the lower forward segment, progressively increasing the second load to a third load (to) and rolling the contact area to create a third distance between the center point and the front end, and the upper forward segment and the lower forward segment (621, 623) expanding the second loop opening to a elongate third loop opening, the third loop opening being longer than the second loop opening and defined by the upper forward segment, the lower forward segment, the contact area and the front end connected to the upper forward segment and the lower forward segments. providing a shoe-insert having an upper leg and a lower leg connected by a front end, providing the upper leg with an upwardly-facing concave front segment and an upwardly-facing convex rear segment terminating at the front end, providing the lower leg with a downwardly-facing concave front segment and a downwardly-facing convex rear segment, the lower leg forming a mirror-image of the upper leg, and the method further comprising; the upwardly-facing convex rear segment terminating at a straight outer rear leg segment and the downwardly-facing convex rear segment terminating at a straight outer rear leg segment, putting a first load on the straight outer rear leg segment of the upper leg, and the the first load bending the upper leg and the lower leg and creating a contact area between the upwardly-facing concave front segment and the downwardly-facing concave front segment, the contact area having a center point being at a first distance from the front end, pulling an upper forward segment away from a lower forward segment immediately adjacent to the front end and creating a first loop opening, the first loop opening being defined by the upper forward segment, the lower forward segment, the contact area and the front end connected to the upper forward segment and the lower forward segment, progressively increasing the first load to a second load and moving the contact area to a second distance from the front end, the second distance being greater than the first distance, the upper forward segment and the lower forward segment expanding the first loop opening to a second loop opening, the second loop opening being defined by the upper forward segment the lower forward segment, the contact area and the front end connected to the upper forward segment and the lower forward segment, progressively increasing the second load to a third load (to) and rolling the contact area to create a third distance between the center point and the front end, and the upper forward segment and the lower forward segment (621, 623) expanding the second loop opening to a elongate third loop opening, the third loop opening being longer than the second loop opening and defined by the upper forward segment, the lower forward segment, the contact area and the front end connected to the upper forward segment and the lower forward segments.