Pre-Exhaust Lactic Acid Training for Chest...this pre-exhaust superset method concentrates the "burn" in the chest via lactate (lactic acid). This lactic acid build up can actually be very effective for burning stubborn fat as it causes your body to secrete Growth Hormone, which in turn helps to unlock stubborn fat cells. Now, just to be clear, this doesn't mean it directly targets fat on the chest. This isn't a method for spot reduction. Unlocking stubborn fat is still a systemic process...but