It is a metabolic route in which lactate created by anaerobic glycolysis in muscles is transported to the liver and transformed to glucose, which is then metabolized back to lactase in the muscles.
The lactic acid cycle is another name for the Cori cycle.
Under anaerobic conditions, the cori cycle avoids lactic acidosis in muscles.
Because muscles are deprived of energy due to insufficient glucose, this cycle is also crucial for the creation of energy molecules (ATP) during exercise.
The Cori cycle is a far more essential source of gluconeogenesis substrate than food.