Occlusion Training Explained: How Blood Flow Restriction Builds Muscle With Light Weights
Walk into any serious gym and you’ll eventually see it: Some guy curling little pink dumbbells with his arms wrapped like he’s smuggling diamonds across a border. His face is red, veins are standing at attention, and the pain looks—disproportionate to the load. That’s probably occlusion training—also known as blood flow restriction (BFR) or tourniquet training—and despite how absurd it can look, it’s one of the most effective hypertrophy tools most lifters either don’t know about, misunderstand or misuse entirely. Like any training method, occlusion isn’t magic, it isn’t new, and it definitely isn’t idiot-proof. But used correctly, it can build muscle, spare joints, extend careers, and keep you growing long after heavy weights start fighting back. Used incorrectly, it’s just another way to get hurt while convincing yourself you’ve discovered something revolutionary. What Occlusion Training Actually Is Occlusion training involves partially restricting venous blood flow out of a wo...