What is the necessary role it plays?
Lactic acid is a waste product which results from anaerobic glycolysis. However, the liver can convert it back to glucose by gluconeogenesis. BTW, the “lactic acid burn” that you get when you go anaerobic is not the result of the high levels of lactate in your blood. Subject who were given high levels of sodium lactate did not suffer any of the symptoms to being anaerobic. These symptoms result from the drop in pH of the blood which results from dumping acid into it. You’d get the same symptoms from anything that produced acidosis.
