BFR is taking a device such as a cuff or wrap and placing it around a limb to curb partial blood blow to the affected area. When placing the cuff around the limb, blood flow is restricted by limiting arterial flow and venous return. By restricting the blood flow, higher levels of metabolic stress are created. Both metabolic stress and mechanical tension are associated with increased muscle growth. Because BFR can create this metabolic stress, exercises can be performed with low-load resistance training and achieve the same if not better results than traditional strength training.