The invention is a brace that secures to a person's chest, waist and legs. The brace includes a chest frame that supports the anterior chest and and a thigh frame that supports the anterior thighs where the two frames are pivotably connected to each other. In addition, an extension spring links the torso frame and the thigh frame such that when a user is bending over, i.e. flexed or in a state of flexion, in which gravity is exerting a greater downward force on the torso, a counter-force is exerted on the person's chest, with the counter-force increasing in magnitude as the degree of flexion at the waist increases.