BFR is an effective technique used as an adjunct to exercise to enhance physiological adaptations normally brought about by high-intensity and high-volume strength training. When applied appropriately BFR allows arterial blood flow to the tissues while restricting the venous return. Moderate individualized pressure is appropriately measured every session using Doppler ultrasound and applied using a manual pneumatic cuff to restrict the venous blood flow without affecting the arterial blood flow. The evidence supporting BFR as an effective tool with low-intensity resistance training in rehabilitating post-surgical patients with weak muscles and older individuals continues to grow. BFR is not occlusion training. It is a useful technique in clinical rehabilitation to promote muscle growth, strength, and power without overloading the muscles or stressing the joints.