Lifting Belt

The belt's principle is biomechanical, not orthopedic. It doesn't work like a brace that prevents you from moving: it works like a resistance surface. When you take a deep breath and push your abdomen outward (the Valsalva maneuver), the belt blocks that expansion and converts it into intra-abdominal pressure. That pressure stabilizes the spine from the inside, like a rigid cylinder of compressed air surrounding the spinal column.

The result: a significantly more stable core that lets you transfer more force to the barbell with less leakage. Several studies have measured strength increases of 5-15% in the squat and deadlift when using a belt compared to lifting beltless. That's not a trivial number.

When to use it: on heavy sets of squats, deadlifts, military press, and any exercise that loads the spine significantly. The rough threshold is around 80-85% of your 1RM and above. When not to use it: on light sets, during warm-ups, on isolation exercises, and on any movement where the core isn't the critical factor. The belt should not become a permanent habit. If you always wear it, your core never learns to stabilize on its own. Save it for the loads where it actually makes a difference.