Use the Valsalva Maneuver Properly Under Heavy Loads

Take the breath low into the abdomen, using the nose or pursed lips rather than a wide-open mouth, pull up from below, and create an exhalation that did not happen while maintaining a neutral spine. For longer efforts, breathe behind the shield. Match the breath with the force in punching, throwing, or lifting; exhalation during punching was said to add power.