Anaerobic endurance is the length of time muscle contractions can be supported by glycolysis and existing energy reserves of ATP and CP. Ex_ 50 yard dash, pole vault, weight lifting.
Aerobic endurance is the length of time a muscle can continue to contract while being supported by mitochondrial activities. Aerobic endurance is determined by the availability of substrates for aerobic metabolism from the breakdown of CARBOHYDRATES, LIPIDS, or AMINO ACIDS.
I guess that explains why lol