Yes, lactic acid is one of many factors that helps stimulate adaptation and growth of muscle. However, it is not a goal, in and of itself, to get high lactate levels in blood with the B Strong Training SystemTM. Lactate levels accumulate in muscle fibers when the rate of glycolysis (breakdown of carbohydrates, glycogen and glucose) exceeds the rate of the mitochondria to take in and process carbohydrates with oxygen. By limiting the circulation with the B Strong Training SystemTM, we reduce the ability of the circulation to re-supply oxygen to the working tissue. This results in the earlier onset of high lactate concentrations in a muscle fiber from a workout at much lower absolute work loads.