Abstract: An exercise thigh weight system that includes a sturdy, semi-rigid, and adjustable waist belt, a right leg harness assembly, right leg harness assembly attaching apparatus, a left leg harness assembly, and left leg harness assembly attaching apparatus. The sturdy, semi-rigid, and adjustable waist belt is adjustably and replaceably positionable around the waist of the wearer. The right leg harness assembly extends vertically downwardly from the sturdy, semi-rigid, and adjustable waist belt and encircles the right thigh of the wearer. The right leg harness assembly has an open-ended and flexible lower weighted strap that is encircles only the lower portion of the right thigh above the right knee with the upper portion of the right thigh being free of any weights disposed thereon, so that resistance is provided for the upper portion of the right thigh when the right leg is flexed.