Device and method of constructing shoes

A shoe or device for insertion into a shoe having a foot supporting upper surface, wherein the shoe or device has an upward facing shallow channel on the foot supporting upper surface adapted to underlie the first metatarsal shaft and heelward of the first metatarsal head of the wearer, wherein the channel is adapted to specifically extend in a direction from the toe end of the shoe heelward only under the first metatarsal shaft to short of the first metatarsal head of the wearer, and is pitched or rotated 4±1 degrees plantargrade, with a toeward end of the channel lower than the heelward end of the channel, and wherein the channel is rolled or sloped in a lateral to medial direction downward 9±2 degrees, in the frontal plane, and wherein the channel is yawed or rotated 10±5 degrees clockwise relative to a superior view of the transverse plane, for the left foot shoe, and yawed or rotated 10±5 degrees counterclockwise relative to a superior view of the transverse plane for the right foot shoe, and wherein the shoe or device is contoured and has a dome or raised area supporting surface having its highest point configured to underlie between the first and second metatarsal shafts rearward of the first and second metatarsal heads of the wearer.